Abstract:
The emission spectra of several commercial InGaAlP laser diodes operating in the visible range were investigated. Strong relaxation sidebands at frequency spacings up to ...Show MoreMetadata
Abstract:
The emission spectra of several commercial InGaAlP laser diodes operating in the visible range were investigated. Strong relaxation sidebands at frequency spacings up to 2 GHz were observed in the field spectra. By using optical feedback from an external high-finesse resonator, the laser line-width was reduced from a few hundred megahertz to less than one megahertz. However, only a small part of the laser power was found within the narrow bandwidth, whereas most of the power finds itself in relaxation sidebands a few gigahertz apart from the carrier. The frequency noise reduction was investigated by using an external cavity configuration. With a short cavity length the relaxation oscillation sidebands were completely suppressed, and the laser linewidth was reduced to a few megahertz. Additional strong reduction in the laser linewidth to roughly 50 kHz was obtained using a combination of the external cavity laser with optical feedback from an external high-finesse resonator.<>
Published in: IEEE Journal of Quantum Electronics ( Volume: 29, Issue: 3, March 1993)
DOI: 10.1109/3.206571
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Diode Laser ,
- Visual Feedback ,
- Optical Power ,
- Beat Frequency ,
- Near-infrared Laser ,
- Longitudinal Mode ,
- Cavity Length ,
- Laser Mode ,
- Narrow Linewidth ,
- Part Of Power ,
- Free Spectral Range ,
- Optical Isolator ,
- Visible Laser ,
- External Cavity ,
- Feedback Phase ,
- Spectral Linewidth ,
- Field Spectra ,
- Antireflection Coatings ,
- Relaxation Oscillator ,
- Laser Linewidth ,
- Dye Laser ,
- Application Of Spectroscopy ,
- High Power ,
- Spectral Purity ,
- Damped Oscillations ,
- Broad Tuning ,
- Grating ,
- External Laser ,
- Commercial Laser ,
- Piezoelectric Transducer
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Diode Laser ,
- Visual Feedback ,
- Optical Power ,
- Beat Frequency ,
- Near-infrared Laser ,
- Longitudinal Mode ,
- Cavity Length ,
- Laser Mode ,
- Narrow Linewidth ,
- Part Of Power ,
- Free Spectral Range ,
- Optical Isolator ,
- Visible Laser ,
- External Cavity ,
- Feedback Phase ,
- Spectral Linewidth ,
- Field Spectra ,
- Antireflection Coatings ,
- Relaxation Oscillator ,
- Laser Linewidth ,
- Dye Laser ,
- Application Of Spectroscopy ,
- High Power ,
- Spectral Purity ,
- Damped Oscillations ,
- Broad Tuning ,
- Grating ,
- External Laser ,
- Commercial Laser ,
- Piezoelectric Transducer
