Compensation of higher-order frequency-dependent phase terms in chirped-pulse amplification systems
- Lawrence Livermore National Laboratory, P.O. Box 808, L-251, Livermore, California 94550 (United States)
We have developed a system that provides monotonic tuning of the higher-order frequency-dependent phase of ultrashort laser pulses. This technique utilizes geometric aberrations that arise from adjustments to the relative alignment of the elements of an air-spaced doublet lens. In a system such as a diffraction-grating stretcher, the spectral components of the optical pulses are spatially dispersed, and lens aberrations introduce frequency-dependent phase shifts. A numerical model of a general chirped-pulsed amplification system has been developed and verified by comparison with experimental and analytical results. Numerical results indicating that higher-order phase terms can be compensated by a properly adjusted air-spaced doublet design within the pulse stretcher are presented.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5987757
- Journal Information:
- Optics Letters; (United States), Vol. 18:16; ISSN 0146-9592
- Country of Publication:
- United States
- Language:
- English
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