Fig. 1. Schematic diagram of time waveform closed-loop feedback control

Fig. 2. Principle and schematic diagram of real-time monitoring and closed-loop feedback of spectral broadening signals using grating filtering method. (a) Schematic diagram of characteristic spectrum monitoring using fiber Bragg grating; (b) schematic diagram of spectrum monitoring and feedback system using fiber Bragg grating (FBG)^[64]

Fig. 3. Layout diagram of SGII-UP facility and key units causing FM-to-AM^[78]

Fig. 4. Group velocity dispersion compensation feedback control unit

Fig. 5. Output of regenerative amplifier. (a) Output energy stability and near field of regenerative amplifier; (b) self-oscillation optical spectrum of regenerative amplifier before and after spectral control module inserted into cavity

Fig. 6. FM-to-AM at different wavelengths for A-configuration beam line verification system of SG-II upgrade. (a) Wavelength is 1052.8 nm, FM-to-AM is 3%; (b) wavelength is 1053.3 nm, FM-to-AM is 4.6%; (c) wavelength is 1053.9 nm, FM-to-AM is 3.7%

Fig. 7. Time domain modulation diagram and AM spectral transfer function of wedge-shaped target mirror. (a) Time domain modulation before (blue) and behind (red) of the wedge-shaped target mirror; (b) AM spectral transfer function^[78]

Fig. 8. Detection results of high energy laser pulse distortion screening system (SHIELD) in NIF^[80]

Fig. 9. Display results of FM-to-AM real-time monitoring system and amplitude-frequency modulation detection results of single-polarization front end system of SG-II upgrade. (a) Display results of real-time monitoring system; (b) amplitude-frequency modulation detection results of single-polarization front end system(3 h)

Fig. 10. Near-field intensity distribution control strategy (OALAV: optically addressed liquid addressed valve)^[40]

Fig. 11. Passive shaping element. (a) Serrated aperture; (b) binary amplitude element

Fig. 12. Dielectric film binary amplitude element

Fig. 13. Optical addressing spatial light modulator developed by Shanghai Institute of Optics and Fine Mechanics and demonstration effect of beam shaping. (a) Optical addressing spatial light modulator; (b) demonstration effect of beam shaping

Fig. 14. Structure diagram of liquid crystal optical switch based on GaN material and test results of switch ratio. (a) Liquid crystal optical switch structure diagram; (b) switching ratio test results

Fig. 15. Experimental demonstration of main structure and dynamic regulation of reflective liquid crystal spatial light modulator based on transparent conductive film with high laser damage threshold GaN. (a) Main structure of reflective liquid crystal spatial light modulator; (b) dynamic control experimental demonstration

Fig. 16. Main structure and measured results of laser resistant light addressing spatial light modulator. (a) Main structure; (b) measured results of laser radiation resistance

Fig. 17. Application Example of Optically oriented liquid crystal devices and contrast test results at maximum aperture. (a) Optical oriented liquid crystal devices achieve 10 mm×10 mm soft edge aperture; (b) brightness and dark contrast test at 62 mm×62 mm aperture

Fig. 18. Physical diagram of the Pre-amplifier system with repetition rate