Abstract
We present results from cryogenic tests of volume-phase holographic (VPH) gratings at . The aims of these tests are to see whether the diffraction efficiency as a function of wavelength is significantly different at a low temperature from that at room temperature and to see how the performance of a VPH grating is affected by a number of thermal cycles. We have completed ten cycles between room temperature and and find no clear evidence that the diffraction efficiency changes with temperature or with a successive thermal cycle.
© 2006 Optical Society of America
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