Fig. 1. Schematic of chirped volume Bragg grating

Fig. 2. Diffraction characteristics of CVBG. (a) Diffraction spectra curves of CVBG with different thicknesses, inset is that central diffraction efficiency as a function of thickness; (b) diffraction spectra curves of CVBG with different chirp rates, inset is that central diffraction efficiency as a function of the chirp rate

Fig. 3. Diffraction characteristics and dispersion characteristics of CVBG with different thicknesses. (a) Diffraction spectra curves of CVBG with different thicknesses (left) and spectral intensity curves of input pulse (right); (b) group delay curves of CVBG with different thicknesses

Fig. 4. Pulse stretching response curves of CVBG with different thicknesses

Fig. 5. Pulse compression response characteristics of CVBG. (a) Pulse compression response curves of CVBG with different thicknesses; (b) pulse compression characteristics of CVBG as a function of the diffraction bandwidth

Fig. 6. Spectral intensity curves of four chirped pulses (left) and diffraction efficiency curve of CVBG (right)

Fig. 7. Response characteristics of broadband CVBG to linear chirped pulses. (a) Time domain intensity distribution curves of input pulses; (b)spectral phase curves of input pulses; (c) time domain intensity distribution curves of output pulses; (d) spectral phase curves of output pulses