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Publication details for Prof Ray Sharples

Tamura, N., Murray, G.J., Luke, P., Blackburn, C., Robertson, D.J., Dipper, N.A., Sharples, R.M. & Allington-Smith, J.R. (2006). Cryogenic tests of volume-phase holographic gratings: results at 100 K. Applied Optics 45(23): 5923-5928.

Author(s) from Durham


We present results from cryogenic tests of volume-phase holographic (VPH) gratings at ∼100  K∼100  K. 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 100   K100   K and find no clear evidence that the diffraction efficiency changes with temperature or with a successive thermal cycle.