J. Primot et al., WAVE-FRONT SENSOR PROTOTYPE FOR INDUSTRIAL APPLICATIONS BASED ON A 3-LEVEL PHASE GRATING, Optical engineering, 36(3), 1997, pp. 901-904
The wavefront sensor is a key component in applications such as adapti
ve optics, atmospheric turbulence analysis, and flow visualization. A
prototype achromatic three-wave lateral-shearing interferometer is des
cribed. It is adapted to low-light-level conditions and enables high s
patial resolution of the analyzed wavefront. It is essentially based o
n the use of a specific three-level phase grating. (C) 1997 Society of
Photo-Optical Instrumentation Engineers.