CONTROL OF THE INTERFERENCE FRINGES IN A POINT DIFFRACTION INTERFEROMETER USING AN OPTICAL SATURABLE ABSORBER

摘要

In conclusion, control of the contrast of the fringe pattern in a PDI using an optical saturable absorber and blue light has been discussed in detail. The contrast can be varied by the adjusting the intensity of the blue light. Therefore, it is possible to obtain good contrast for a wide variety of wavefronts by using this method.