Abstract:
Summary form only given.So far, ultrashort pulse characterization techniques have measured the spatially averaged amplitude and phase of the input beam. For beams exhibit...Show MoreMetadata
Abstract:
Summary form only given.So far, ultrashort pulse characterization techniques have measured the spatially averaged amplitude and phase of the input beam. For beams exhibiting a significant spatial structure, however, it is desirable to completely spatially resolve the pulses to be characterized. Complex spatial structure can be found, for example, in broadband Kerr-lens modelocked lasers as a consequence of the frequency-dependent mode-size. In this contribution we demonstrate a technique based on spectral phase interferometry for direct electric-field reconstruction (SPIDER) that allows for measurement of the amplitude and phase of an ultrashort pulse at an arbitrary lateral position of the input beam. Only a single measurement is required for the acquisition of the spatially resolved data along one beam axis.
Date of Conference: 07-12 May 2000
Date Added to IEEE Xplore: 06 August 2002
Print ISBN:1-55752-634-6
Citations are not available for this document.
Cites in Patents (2)Patent Links Provided by 1790 Analytics
1.
Palese, Stephen P., "HIGH AVERAGE POWER CHIRPED PULSE FIBER AMPLIFIER ARRAY"
Inventors:
Palese, Stephen P.
Abstract:
An apparatus is provided including a source of spectrally dispersed seed wavelengths optically coupled to an array of fibers. Laser diode pumps are optically coupled to the array of fibers for amplifying the wavelengths through the array. A computer controlled feedback loop intercouples the array of fibers and laser diode pumps, the source of seed wavelengths and/or phase modulators for maintaining the wavelengths and relative phases in the array of fibers to desired levels. A compressor is optically coupled to an end of the array of fibers so as to receive and overlap the wavelengths from the individual fibers of the array.
Assignee:
NORTHROP GRUMMAN CORP
Filing Date:
14 March 2001
Grant Date:
27 May 2003
Patent Classes:
Current U.S. Class:
359349000, 372006000, 372029011, 372038010
Current International Class:
H01S0030000000, H01S0033000000, H01S0031300000
2.
Grunwald, Rüdiger Dr.; Griebner, Uwe Dr.; Elsässer, Thomas Prof. Dr.; Kebbel, Volker; Jüptner, Werner Paul Otto Prof. Dr.-Ing.; Hartmann, Hans-Jürgen Dr., "Process and arrangement for a space- and time-resolved interferometric characterization of ultrashort laser pulses"
Inventors:
Grunwald, Rüdiger Dr.; Griebner, Uwe Dr.; Elsässer, Thomas Prof. Dr.; Kebbel, Volker; Jüptner, Werner Paul Otto Prof. Dr.-Ing.; Hartmann, Hans-Jürgen Dr.
Abstract:
Disclosed in a method and arrangement for performing a spatially resolved non-collinear measurement of the autocorrelation function of the first or higher order by means of a matrix of beam shaping individual elements, such that there is a local splitting of the beam into a beam matrix of conical component beams, where each component beam represents spatially integrated information regarding the partial area of the matrix through which it passes, the interference resolution is thus determined by the matrix geometry, and the interference pattern produced in space by each component beam in a certain plane imaged on a matrix camera supplies an autocorrelation function of the first order or, by utilizing non-linear interactions in a suitable medium, of a higher order accordingly, so that the coherence time or the pulse period of individual laser pulses or trains of multiple laser pulses can be determined as a function of location.
Assignee:
FORSCHUNGSVERBUND BERLIN E V
Filing Date:
21 May 2001
Grant Date:
17 April 2002
Patent Classes:
Current International Class:
G01J0110000000, G02B0270900000
