Chirped volume Bragg grating (CVBG) is a reflecting volume Bragg grating with a period that gradually varies along the beam propagation direction. 
Depending on the incident direction, CVBG can work as a pulse stretcher or compressor. CVBG is mainly designed for stretching and compression
of femtosecond and picosecond laser pulses in a chirped pulse amplification (CPA) system. Compared with the traditional pulse stretcher and compressor, CVBG has many
advantages such as high laser-induced damage threshold, large dispersion, and compact geometry, which makes CVBG a good pulse stretcher/compressor solution for high-energy and
high-average-power ultra-short pulsed laser systems.

Working wavelength and D2/D3 can be customized according to customers' requirements.