Two transmissive ZnSe reformatting elements were designed and fabricated with the objective of examining the performance of transmissive Diffractive Optical Elements (DOEs) at power levels and power densities greater than 1 kW and 1 kWcm-2. Initial results show that the diffraction efficiency of the elements after fabrication is within 5% of the theoretical value, while absorption levels of less than 0.5% for the structured AR coated surface were achieved. The DOEs perform reliably with only forced air cooling at incident laser power levels and power densities of 3.2 kW and 1.8 kWcm-2 with an upper power limit yet to be determined.
|Title of host publication||Proceedings of the 1998 International Symposium on Information Theory|
|Publication status||Published - 1998|
|Event||1998 International Symposium on Information Theory - Glasgow, Scotland, United Kingdom|
Duration: 14 Sept 1998 → 18 Sept 1998
|Conference||1998 International Symposium on Information Theory|
|Period||14/09/98 → 18/09/98|