Patent ID: 8422125

Claim:
A self-collimator concave spectral shaping apparatus for chirped-pulse-amplification (CPA); of which the features comprise the following: in optical path order, a first beam splitter prism ( 8 ), a second beam splitter prism ( 9 ), and a ¼ wave plate ( 7 ); and a first concave reflector ( 1 ), a first aperture ( 6 ), and a second concave reflector ( 2 ), and these ( 1 )-( 6 )-( 2 ) constitute a illumination system; and, the first aperture ( 6 ), the second concave reflector ( 2 ), a grating ( 3 ), a third concave reflector ( 4 ) and a concave reflector for spectrum shaping function design ( 5 ′), and these ( 6 )-( 2 )-( 3 )-( 4 )-( 5 ′) constitute a spectrum decomposing system with Czerny-Turner Spectroscope Instrument (CTSI) construction for a self-collimator concave spectral shaping apparatus; in addition, the concave reflector for spectrum shaping function design ( 5 ′) constitutes a spectrum shaping system; furthermore, the concave reflector for spectrum shaping function design ( 5 ′), the third concave reflector ( 4 ), the grating ( 3 ), the second concave reflector ( 2 ), and the first aperture ( 6 ), and these ( 5 ′)-( 4 )-( 3 )-( 2 )-( 6 ) constitute a spectrum synthesizing system with CTSI construction for the self-collimator concave spectral shaping apparatus; of which the processing features are the following: in optical path order, a laser beam from the front-end system ( 0 ) of a CPA system passes through the first beam splitter prism ( 8 ) for producing a polarization; via the ¼ wave plate ( 7 ) and the first concave reflector ( 1 ), then it passes through the first concave reflector ( 1 ), the first aperture ( 6 ), and the second concave reflector ( 2 ), which transfers the laser beam into a parallel light; As mentioned above, it passes through the spectrum decomposing system, the spectrum shaping system and the spectrum synthesizing system for the self-collimator concave spectral shaping apparatus, which accomplish the spectrum decomposing, the spectrum shaping, and the spectrum synthesizing of the chirped pulse; then it passes through the ¼ wave plate ( 7 ), its polarization rotates 90 degrees; after that, it is reflected fully by the first beam splitter prism ( 8 ) to the second beam splitter prism ( 9 ) for producing a polarization of the modulated chirped pulse, and it is sent on to the following stage.