Umar Haiyat Abdul Kohar - IEEE Xplore Author Profile

Scheduled Maintenance on Monday 1/13/2025

Single article sales and account management will be unavailable from 5:00 AM - 7:00 PM ET (09:00 - 23:00 UTC). We apologize for the inconvenience.

IEEE.org
IEEE Xplore
IEEE SA
IEEE Spectrum
More Sites

- Donate
- Personal Sign In

Institutional Sign In

Institutional Sign In

ADVANCED SEARCH

Author details

Umar Haiyat Abdul Kohar

Publications

7

Citations

18

Publications by Year

20172022

Co-Authors:

Abdul Halim AbdullahMohd Salleh AbuDayana Farzeeha AliSiti Hajar Mohd AminZakiah Mohamad Ashari

Show All Co-Authors (23)

Umar Haiyat Abdul Kohar

Affiliation

Azman Hashim International Business School

Universiti Teknologi Malaysia

Johor Bahru, Malaysia

Publication Topics

Mathematics Education,
Mathematics Learning,
Small Class,
Mathematical Concepts,
Mathematics Achievement,
Mathematics Classroom,
South Korea,
South Korean,
21st Century,
21st Century Skills,
3D Geometry,
3D Modeling Software

Biography

Umar Haiyat Abdul Kohar received the bachelor’s and master’s degrees from the Universiti Teknologi MARA (UiTM) Shah Alam and the Ph.D. degree from RMIT University, Australia. He is currently a Senior Lecturer with the Azman Hashim International Business School, Universiti Teknologi Malaysia, Johor Bahru Campus. His research interests include entrepreneurship education and innovation management.(Based on document published on 28 January 2022).

Publications

7

Citations

18

Publications by Year

20172022

Co-Authors:

Abdul Halim Abdullah
Mohd Salleh Abu
Dayana Farzeeha Ali
Siti Hajar Mohd Amin
Zakiah Mohamad Ashari

Show All Co-Authors (23)

Author's Published Works

Search History

Showing 1-25 of 59 results

Journals (37)

Conferences (21)

Early Access Articles (1)

Sort

Filter Results

Show

Open Access Only

Range
Single Year
Mali Gong(58)
Qirong Xiao(26)
Ping Yan(25)
Dan Li(17)
Xing Fu(13)
State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing, China(11)
Department of Precision Instrument, Tsinghua University, Beijing, China(7)
Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA, USA(4)
Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instruments & Key Laboratory of Photonics Control Technology of the Ministry of Education, Tsinghua University, Beijing, China(3)
Center of Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, China(3)
IEEE Photonics Technology Letters(10)
IEEE Journal of Quantum Electronics(9)
IEEE Photonics Journal(7)
2022 Conference on Lasers and Electro-Optics (CLEO)(5)
Journal of Lightwave Technology(5)
IEEE(59)
Media(1)
San Jose, CA, USA(16)
Baltimore, MD, USA(2)
Guangzhou, China(1)
Hong Kong, China(1)
San Antonio, TX, USA(1)
Pump Power(30)
Output Power(27)
Beam Quality(23)
Fiber Laser(19)
High Power(13)

Select All on Page

Sort By

Results

Investigations of a 439 W Narrow-Linewidth Er/Yb Fiber Amplifier Pumped by 1018 nm Fiber Lasers

Guanzhong Li;Dan Li;Yuexuan Cai;Guohao Fu;Weilong Yu;Pei Li;Qirong Xiao;Mali Gong;Ping Yan

Journal of Lightwave Technology

Year: 2024 | Early Access Article |

In this paper, a 439 W, 1567 nm, narrow-linewidth Er/Yb co-doped fiber (EYDF) laser system pumped by 1018 nm fiber lasers is demonstrated. The 1018 nm fiber lasers are utilized as pumping source to suppress the ∼1 μm amplified spontaneous emission. It is the highest output power reported for EYDF lasers to date. A novel EYDF model considering the pair-induced quenching (PIQ) and the excited state ...Show More

Investigations of a 439 W Narrow-Linewidth Er/Yb Fiber Amplifier Pumped by 1018 nm Fiber Lasers

Guanzhong Li;Dan Li;Yuexuan Cai;Guohao Fu;Weilong Yu;Pei Li;Qirong Xiao;Mali Gong;Ping Yan

Journal of Lightwave Technology

Year: 2024 | Early Access Article |

10-kW-level Yb-Raman fiber laser based on adjustable Raman threshold method

Tiancheng Qi;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2023 Conference on Lasers and Electro-Optics (CLEO)

Year: 2023 | Conference Paper |

HTML

By adjusting Raman threshold method according to pump power, the residual pump and high-order Raman scattering are suppressed. A 10.7 kW Yb-Raman fiber laser operating at 1120 nm is achieved for the first time.Show More

10-kW-level Yb-Raman fiber laser based on adjustable Raman threshold method

Tiancheng Qi;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2023 Conference on Lasers and Electro-Optics (CLEO)

Year: 2023 | Conference Paper |

Design and Experimental Investigation of Three Degrees of Freedom Nanoscale Microsuspension Actuators

Mingyuan Liu;Ping Su;Jianshe Ma;Mali Gong;Rende Wang

IEEE Transactions on Industrial Electronics

Year: 2023 | Volume: 70, Issue: 2 | Journal Article |

Cited by: Papers (2)

HTML

Nanoscale actuators are one of the key technologies in high-precision servo systems. For optical storage systems, the performance of the actuator determines the maximum storage capacity and read/write speed. This article introduces a three-degrees of freedom nanoscale microsuspension actuator. Compared with an actuator from a traditional optical storage system, the proposed actuator can hold dual ...Show More

Design and Experimental Investigation of Three Degrees of Freedom Nanoscale Microsuspension Actuators

Mingyuan Liu;Ping Su;Jianshe Ma;Mali Gong;Rende Wang

IEEE Transactions on Industrial Electronics

Year: 2023 | Volume: 70, Issue: 2 | Journal Article |

Dynamical structures and collective dynamics of soliton crystals in Kerr microresonator

Futai Hu;Abhinav Kumar Vinod;Wenting Wang;Mali Gong;Chee Wei Wong

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

HTML

We experimentally observed spatiotemporal dynamics of soliton crystals in a Kerr microresonator. We numerically reproduce our observations and further confirm them using an ultrafast temporal imaging system.Show More

Dynamical structures and collective dynamics of soliton crystals in Kerr microresonator

Futai Hu;Abhinav Kumar Vinod;Wenting Wang;Mali Gong;Chee Wei Wong

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

All-fiber scan-free precision detection with large depth of field

Lele Wang;Yousi Yang;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

HTML

We demonstrate an all-fiber detecting system based on a single multimode fiber. The system showcases the capability to detect precision natural scenes by its inverse transmission matrix. Integrated reflective illumination mode makes it more accessible.Show More

All-fiber scan-free precision detection with large depth of field

Lele Wang;Yousi Yang;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

Single-pixel high-speed imaging through a multimode fiber

Zhoutian Liu;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

HTML

While traditional high-speed cameras are generally bulky and based on pixel-array detectors, we propose a high-speed imaging scheme based on a multimode fiber using only one pixel. The frame rate of imaging reaches 60.3 Mfps.Show More

Single-pixel high-speed imaging through a multimode fiber

Zhoutian Liu;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

Achieving flat spectral envelopes of soliton crystal frequency microcombs

Futai Hu;Abhinav Kumar Vinod;Wenting Wang;Ziyu Zhan;Mali Gong;Chee Wei Wong

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

HTML

Flat optical spectra are desired in many frequency microcomb applications such as ultrabroadband optical communication, interconnects, spectroscopy, and metrology. Here we achieve flat-top spectral envelopes via deterministic control in soliton crystal microcombs.Show More

Achieving flat spectral envelopes of soliton crystal frequency microcombs

Futai Hu;Abhinav Kumar Vinod;Wenting Wang;Ziyu Zhan;Mali Gong;Chee Wei Wong

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

Accelerating two-plasmon spontaneous emission via nonlocal epsilon-near-zero modes

Futai Hu;Liu Li;Yuan Meng;Mali Gong;Yuanmu Yang

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

HTML

We apply the epsilon-near-zero effect to greatly accelerate the typically forbidden two-plasmon spontaneous emission of a doped InSb film, resulting in entangled mid-infrared light emission with an emission rate comparable to the one-photon emission process.Show More

Accelerating two-plasmon spontaneous emission via nonlocal epsilon-near-zero modes

Futai Hu;Liu Li;Yuan Meng;Mali Gong;Yuanmu Yang

2022 Conference on Lasers and Electro-Optics (CLEO)

Year: 2022 | Conference Paper |

Kilowatt-Level Supercontinuum Generation in Random Raman Fiber Laser Oscillator With Full-Open Cavity

Tiancheng Qi;Yousi Yang;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

Journal of Lightwave Technology

Year: 2022 | Volume: 40, Issue: 21 | Journal Article |

Cited by: Papers (10)

HTML

High-power supercontinuum (SC) sources are important for remote sensing, homeland defense, and scientific research. Despite recent advances in power scaling of the SC generation in optical fibers, the power record of SC fiber laser sources is still much lower than conventional high-power fiber lasers. Here we demonstrate a method for kilowatt-level SC generation based on the random Raman fiber las...Show More

Kilowatt-Level Supercontinuum Generation in Random Raman Fiber Laser Oscillator With Full-Open Cavity

Tiancheng Qi;Yousi Yang;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

Journal of Lightwave Technology

Year: 2022 | Volume: 40, Issue: 21 | Journal Article |

10 kW Fiber Amplifier Seeded by Random Fiber Laser With Suppression of Spectral Broadening and SRS

Shanshan Du;Tiancheng Qi;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

IEEE Photonics Technology Letters

Year: 2022 | Volume: 34, Issue: 14 | Journal Article |

Cited by: Papers (16)

HTML

A 10 kW fiber amplifier seeded by the random fiber laser (RFL) with 1018 nm tandem-pumping scheme is reported in this letter. The amplified RFL centered at 1085 nm is seeded by the RFL with a full-open cavity. An array of chirped and tilted fiber Bragg gratings placed before the main amplifier prevent the stimulated Raman scattering with a suppression ratio of 55.8 dB. Control experiments prove th...Show More

10 kW Fiber Amplifier Seeded by Random Fiber Laser With Suppression of Spectral Broadening and SRS

Shanshan Du;Tiancheng Qi;Dan Li;Ping Yan;Mali Gong;Qirong Xiao

IEEE Photonics Technology Letters

Year: 2022 | Volume: 34, Issue: 14 | Journal Article |

6.85 kW Ytterbium-Raman Fiber Amplifier Based on Adjustable Raman Threshold Method

Tiancheng Qi;Dan Li;Zehui Wang;Lele Wang;Weilong Yu;Ping Yan;Mali Gong;Qirong Xiao

Journal of Lightwave Technology

Year: 2022 | Volume: 40, Issue: 12 | Journal Article |

Cited by: Papers (8)

HTML

To achieve a high spectral purity Raman laser in a wide range of pump power, we propose the adjustable Raman threshold method and experimentally demonstrate a 6.85 kW ytterbium-Raman (Yb-Raman) fiber amplifier in this paper. The Raman threshold is adjusted to coordinate with pump power level via manipulating the Raman proportion from the master oscillator. The spectral purity of Raman laser at 112...Show More

6.85 kW Ytterbium-Raman Fiber Amplifier Based on Adjustable Raman Threshold Method

Tiancheng Qi;Dan Li;Zehui Wang;Lele Wang;Weilong Yu;Ping Yan;Mali Gong;Qirong Xiao

Journal of Lightwave Technology

Year: 2022 | Volume: 40, Issue: 12 | Journal Article |

Spectrum broadening suppression for kW-class narrow linewidth FBG-based fiber laser

Yulun Wu;Yusheng Huang;Zehui Wang;Dan Li;Ping Yan;Qirong Xiao;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

HTML

Spectral broadening caused by nonlinear effects was analyzed in the narrow linewidth FBG-based fiber laser. Kilowatt-class narrow linewidth fiber lasers were established. The maximum power and power spectral density were 3 kW and 29.3 W/pm.Show More

Spectrum broadening suppression for kW-class narrow linewidth FBG-based fiber laser

Yulun Wu;Yusheng Huang;Zehui Wang;Dan Li;Ping Yan;Qirong Xiao;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

Inverse designed arbitrary fiber mode convertors with high efficiency for OAM generations and MDM applications

Zhoutian Liu;Yuan Meng;Zhuorun Zhou;Lue Wang;Qirong Xiao;Dan Li;Ping Yan;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

HTML

We propose a set of inverse-designed nanostructured fibers capable of performing arbitrary mode conversion and OAM generations with configurable topological charge 1 ~ 3, with high mode-purity exceeding 98% and ultrabroad bandwidth over 370 nm.Show More

Inverse designed arbitrary fiber mode convertors with high efficiency for OAM generations and MDM applications

Zhoutian Liu;Yuan Meng;Zhuorun Zhou;Lue Wang;Qirong Xiao;Dan Li;Ping Yan;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

Arbitrary designer mode convertor and on-chip OAM generator with configurable topological charge using waveguide-integrated metasurface

Yuan Meng;Tiantian He;Zhoutian Liu;Futai Hu;Qirong Xiao;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

HTML

Leveraging waveguide-integrated metasurface platform, designer mode convertors capable of exclusively exciting arbitrary high-order modes with high-purity reaching 98% are proposed. We also report on-chip scalable broadband vortex-beam-generators with configurable topological charge from -3 to +3.Show More

Arbitrary designer mode convertor and on-chip OAM generator with configurable topological charge using waveguide-integrated metasurface

Yuan Meng;Tiantian He;Zhoutian Liu;Futai Hu;Qirong Xiao;Mali Gong

2021 Conference on Lasers and Electro-Optics (CLEO)

Year: 2021 | Conference Paper |

5.1 kW Tandem-Pumped Fiber Amplifier Seeded by Random Fiber Laser With High Suppression of Stimulated Raman Scattering

Zehui Wang;Weilong Yu;Jiading Tian;Tiancheng Qi;Dan Li;Qirong Xiao;Ping Yan;Mali Gong

IEEE Journal of Quantum Electronics

Year: 2021 | Volume: 57, Issue: 2 | Journal Article |

Cited by: Papers (26)

HTML

In this work, high-power tandem-pumped random fiber lasers are investigated in detail. A 6.5 W random fiber laser seed centered at 1070 nm with a half-open cavity structure was built. Boosted by two amplifier stages, the random fiber laser achieved a power of several kilowatts. Stimulated Raman scattering (SRS) mitigation is challenging in tandem-pumped fiber lasers. To suppress SRS, several metho...Show More

5.1 kW Tandem-Pumped Fiber Amplifier Seeded by Random Fiber Laser With High Suppression of Stimulated Raman Scattering

Zehui Wang;Weilong Yu;Jiading Tian;Tiancheng Qi;Dan Li;Qirong Xiao;Ping Yan;Mali Gong

IEEE Journal of Quantum Electronics

Year: 2021 | Volume: 57, Issue: 2 | Journal Article |

Single Image Super-Resolution by Residual Recovery Based on an Independent Deep Convolutional Network

Fei Wang;Mali Gong

Year: 2021 | Volume: 9 | Journal Article |

Cited by: Papers (5)

HTML

In this paper, we propose an independent neural network for single image super-resolution by residual recovery. The network is inspired by the observation that there still exists image residuals between the low-resolution image and the downsampled high-resolution output obtained by a previously proposed super-resolution network. Based on this observation, we design a simple but effective deep conv...Show More

Single Image Super-Resolution by Residual Recovery Based on an Independent Deep Convolutional Network

Fei Wang;Mali Gong

Year: 2021 | Volume: 9 | Journal Article |

On-Chip Mode-Controlled Waveguiding and Versatile Multi-Wavelength Light Routing using Chip-Integrated Dielectric Metasurface for Arbitrary Polarizations

Yuan Meng;Zhoutian Liu;Ride Wang;Tiancheng Qi;Futai Hu;Qiang Wu;Qirong Xiao;Sang-Hoon Bae;Hyunseok Kim;Mali Gong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

HTML

A comprehensive design strategy using waveguide-integrated-metasurface is proposed for versatile on-chip light-coupling. The coupling-direction, operation-wavelength and excited-mode-type are configurable at will for arbitrary polarizations, with high efficiency of 67% and directivity over 20 dB.Show More

On-Chip Mode-Controlled Waveguiding and Versatile Multi-Wavelength Light Routing using Chip-Integrated Dielectric Metasurface for Arbitrary Polarizations

Yuan Meng;Zhoutian Liu;Ride Wang;Tiancheng Qi;Futai Hu;Qiang Wu;Qirong Xiao;Sang-Hoon Bae;Hyunseok Kim;Mali Gong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

Chip-Scale Mode-Configurable Light Couplers and Vortex Beam Generators using Waveguide-Integrated Metasurface

Yuan Meng;Zhoutian Liu;Zhenwei Xie;Futai Hu;Tiancheng Qi;Qirong Xiao;Hyunseok Kim;Sang-Hoon Bae;Xing Fu;Mali Gong;Xiaocong Yuan

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

HTML

Integrated mode-selective on-chip couplers are reported using Si-nanoantennas-patterned Si3N4 waveguide. A chip-integrated twisted-light generator coupling free-space light into optical vortex carrying 1ħ OAM is numerically demonstrated, by engineering spatial modal-overlap & controlled mode mixing.Show More

Chip-Scale Mode-Configurable Light Couplers and Vortex Beam Generators using Waveguide-Integrated Metasurface

Yuan Meng;Zhoutian Liu;Zhenwei Xie;Futai Hu;Tiancheng Qi;Qirong Xiao;Hyunseok Kim;Sang-Hoon Bae;Xing Fu;Mali Gong;Xiaocong Yuan

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

Observation of Islands of Stability in the Chaotic Regime of Kerr Frequency Combs

Futai Hu;Abhinav Kumar Vinod;Chuancheng Jia;Mali Gong;Chee Wei Wong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

HTML

We present results on the transition from chaos to dark pulse and back to chaos with uni-directional pump tuning in Kerr microresonators using an ultrafast spectrum analyzer based on a four-wave-mixing time lens.Show More

Observation of Islands of Stability in the Chaotic Regime of Kerr Frequency Combs

Futai Hu;Abhinav Kumar Vinod;Chuancheng Jia;Mali Gong;Chee Wei Wong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

High-Power Core-Pumped Quasi 4 kW Raman Fiber Lasers

Zehui Wang;Tiancheng Qi;Yusheng Huang;Jiading Tian;Ping Yan;Qirong Xiao;Mali Gong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

HTML

High-power core-pumped Raman fiber lasers are researched theoretically and experimentally. We built multi-frequency model to simulate the power and spectrum of Raman laser. We also established quasi 4-kW Raman fiber laser at 1124 nm.Show More

High-Power Core-Pumped Quasi 4 kW Raman Fiber Lasers

Zehui Wang;Tiancheng Qi;Yusheng Huang;Jiading Tian;Ping Yan;Qirong Xiao;Mali Gong

2020 Conference on Lasers and Electro-Optics (CLEO)

Year: 2020 | Conference Paper |

An Efficient Non-Invasive Method to Fabricate In-Fiber Microcavities Using a Continuous-Wave Laser

Qirong Xiao;Jiading Tian;Dan Li;Yusheng Huang;Zehui Wang;Ping Yan;Mali Gong

IEEE Photonics Technology Letters

Year: 2020 | Volume: 32, Issue: 10 | Journal Article |

Cited by: Papers (1)

HTML

In-fiber microcavities are usually fabricated by inva-sive methods that require costly setups and time-consuming processes. Inspired by the fiber fuse effect, we propose an efficient non-invasive method to fabricate in-fiber microcavities. The setup of the method was economic, using a watt-level continuous-wave laser. Spherical in-fiber microcavities of ~hundred-of-micron sizes could be fabricated...Show More

An Efficient Non-Invasive Method to Fabricate In-Fiber Microcavities Using a Continuous-Wave Laser

Qirong Xiao;Jiading Tian;Dan Li;Yusheng Huang;Zehui Wang;Ping Yan;Mali Gong

IEEE Photonics Technology Letters

Year: 2020 | Volume: 32, Issue: 10 | Journal Article |

Single-Photon Detection Approach for Autonomous Vehicles Sensing

Pengfei Du;Fan Zhang;Zhupeng Li;Qiang Liu;Mali Gong;Xing Fu

IEEE Transactions on Vehicular Technology

Year: 2020 | Volume: 69, Issue: 6 | Journal Article |

Cited by: Papers (13)

HTML

Robustness to interference and low energy consumption are two important issues hindering development of laser-sensing technology for autonomous driving. In this paper, we propose and present an all-in-one sensing solution based on single-photon-detector (SPD) for autonomous driving to address those issues. Incorporating one laser source and several SPDs, the proposed solution is capable of collisi...Show More

Single-Photon Detection Approach for Autonomous Vehicles Sensing

Pengfei Du;Fan Zhang;Zhupeng Li;Qiang Liu;Mali Gong;Xing Fu

IEEE Transactions on Vehicular Technology

Year: 2020 | Volume: 69, Issue: 6 | Journal Article |

1535–1620 nm Widely Tunable Watt-Level Single-Mode Er:Yb Codoped All-Fiber MOPA

Ping Yan;Weilong Yu;Zehui Wang;Jiading Tian;Zhoutian Liu;Dan Li;Qirong Xiao;Mali Gong

IEEE Photonics Technology Letters

Year: 2020 | Volume: 32, Issue: 9 | Journal Article |

Cited by: Papers (5)

HTML

We report a continuous-wave 1535-1620 nm widely tunable single-mode Er:Yb codoped cladding-pumped all-fiber laser source based on the MOPA scheme. The output power ranged from 0.785 W (at 1615 nm) to 2.007 W (at 1565 nm), which is the highest output power from a C+L tunable all-fiber laser source. The 3 dB spectral width was less than 150 pm at all wavelengths. No Yb emission was observed. We prop...Show More

1535–1620 nm Widely Tunable Watt-Level Single-Mode Er:Yb Codoped All-Fiber MOPA

Ping Yan;Weilong Yu;Zehui Wang;Jiading Tian;Zhoutian Liu;Dan Li;Qirong Xiao;Mali Gong

IEEE Photonics Technology Letters

Year: 2020 | Volume: 32, Issue: 9 | Journal Article |

Tandem-Pumped High-Power Narrow-Linewidth Fiber Laser Tunable From 1060–1090 nm

Jiading Tian;Qirong Xiao;Dan Li;Yusheng Huang;Zehui Wang;Zhihua Huang;Ping Yan;Mali Gong

Journal of Lightwave Technology

Year: 2020 | Volume: 38, Issue: 6 | Journal Article |

Cited by: Papers (9)

HTML

Tandem pumping is a promising technique for gaining higher power from ytterbium-doped fiber (YDF) lasers. However, the characteristics of tandem pumped laser light, especially their variation with the lasing wavelengths, were not thoroughly investigated. We investigated the characteristics with the first 1018-nm tandem-pumped high-power tunable YDF laser. The 1018-nm tandem pumping was not applica...Show More

Tandem-Pumped High-Power Narrow-Linewidth Fiber Laser Tunable From 1060–1090 nm

Jiading Tian;Qirong Xiao;Dan Li;Yusheng Huang;Zehui Wang;Zhihua Huang;Ping Yan;Mali Gong

Journal of Lightwave Technology

Year: 2020 | Volume: 38, Issue: 6 | Journal Article |

An Efficient 4-kW Level Random Fiber Laser Based on Tandem-Pumping Scheme

Zehui Wang;Ping Yan;Yusheng Huang;Jiading Tian;Chao Cai;Dan Li;Yongqing Yi;Qirong Xiao;Mali Gong

2019 IEEE Photonics Conference (IPC)

Year: 2019 | Conference Paper |

Cited by: Papers (1)

HTML

In this paper, we presented a monolithic high power random fiber laser with a tandem-pumping scheme. The random fiber laser seed centered at 1064 nm was pumped by a 1018 nm fiber laser and reached an output power of 8.66 W. After the two amplifiers, the seed was amplified to 4020 W and the 3 dB width of laser spectrum was broadened from 0.78 nm to 0.99 nm. To increase the efficiency of the 4 kW la...Show More

An Efficient 4-kW Level Random Fiber Laser Based on Tandem-Pumping Scheme

Zehui Wang;Ping Yan;Yusheng Huang;Jiading Tian;Chao Cai;Dan Li;Yongqing Yi;Qirong Xiao;Mali Gong

2019 IEEE Photonics Conference (IPC)

Year: 2019 | Conference Paper |

IEEE Personal Account

Change username/password

Purchase Details

Payment Options
View Purchased Documents

Profile Information

Communications Preferences
Profession and Education
Technical interests

Need Help?

US & Canada: +1 800 678 4333
Worldwide: +1 732 981 0060
Contact & Support

Follow

About IEEE Xplore | Contact Us | Help | Accessibility | Terms of Use | Nondiscrimination Policy | IEEE Ethics Reporting | Sitemap | IEEE Privacy Policy

A public charity, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.

© Copyright 2025 IEEE - All rights reserved, including rights for text and data mining and training of artificial intelligence and similar technologies.

IEEE Account

Change Username/Password
Update Address

Purchase Details

Payment Options
Order History
View Purchased Documents

Profile Information

Communications Preferences
Profession and Education
Technical Interests

Need Help?

US & Canada: +1 800 678 4333
Worldwide: +1 732 981 0060
Contact & Support

About IEEE Xplore
Contact Us
Help
Accessibility
Terms of Use
Nondiscrimination Policy
Sitemap
Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.
© Copyright 2025 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.

Test Whats new message.