Development of an efficient large-aperture high damage-threshold sol-gel diffraction grating.

Ashley, Carol S. ; Rambo, Patrick K. ; Schwarz, Jens ; Dunphy, Darren Robert ; Branson, Eric D. ; Smith, Ian Craig ; Johnson, William Arthur ; Reed, Scott T. ; Cook, Adam W.

Sandia National Laboratories

关键词: Dielectric Materials;    Mirrors;    Apertures;    Etching;    36 Materials Science;   

DOI  :  10.2172/920450
RP-ID  :  SAND2004-5496
RP-ID  :  AC04-94AL85000
RP-ID  :  920450

美国|英语

来源: UNT Digital Library

【 摘 要 】

In order to develop the next generation of high peak intensity lasers, new grating technology providing higher damage thresholds and large apertures is required. The current assumption is that this technical innovation will be multilayer dielectric gratings, wherein the uppermost layer of a thin film mirror is etched to create the desired binary phase grating. A variant of this is explored with the upper grating layer being a lower density gelatin-based volume phase grating in either sol-gel or dichromated gelatin. One key benefit is the elimination of the etching step.