Rs. Dou et Mk. Giles, CLOSED-LOOP ADAPTIVE-OPTICS SYSTEM WITH A LIQUID-CRYSTAL TELEVISION AS A PHASE RETARDER, Optics letters, 20(14), 1995, pp. 1583-1585
We present a closed-loop adaptive-optics system that uses a liquid-cry
stal television (LCTV) as a phase retarder. The system consists of a L
CTV inserted into one leg of a Mach - Zehnder interferometer so that o
ne measures the wave-front function by analyzing the interferogram usi
ng a video CCD camera and a computer and corrects the wave-front disto
rtion by placing the conjugate function an the LCTV. Experimental resu
lts are presented.