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Achromatic phase matching at third orders of dispersion

Patent ·
OSTI ID:1174544

Achromatic phase-matching (APM) is used for efficiently multiplying the frequency of broad bandwidth light by using a nonlinear optical medium comprising a second-harmonic generation (SHG) crystal and stationary optical elements whose configuration, properties, and arrangement have been optimized to match the angular dispersion characteristics of the SHG crystal to at least the third order. These elements include prisms and diffraction gratings for directing an input light beam onto the SHG crystal such that each ray wavelength is aligned to match the phase-matching angle for the crystal at each wavelength of light to at least the third order and such that every ray wavelength overlap within the crystal.

Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia National Laboratories (Livermore, CA)
Patent Number(s):
6,636,343
Application Number:
09/896,575
OSTI ID:
1174544
Country of Publication:
United States
Language:
English

References (2)

Achromatic phase matching for tunable second-harmonic generation by use of a grism journal January 1997
Grism-pair stretcher–compressor system for simultaneous second- and third-order dispersion compensation in chirped-pulse amplification journal January 1997

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