Laser Setup for Volume Diffractive Optical Elements Recording in Photo-Thermo-Refractive Glass
Technical Report,01 Aug 2014,30 Nov 2015
University of Central Florida Orlando United States
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Recorded in photo-thermo-refractive PTR glass volume Bragg gratings VBGs have found great applications for enhancement of lasers brightness and fine spectral filtering. However, further increase of size of holographic optical elements, which are required for high power laser applications, is restrained because of absence of available lasers emitting on PTR glass photosensitivity region 300-350 nm with large coherence length and high power simultaneously. The recently discovered photosensitivity of PTR glass at 355 nm enabled development of specs for a new laser system to record large aperture holograms. This laser was fabricated by Continuum Corp., a hologram recording setup with this laser was assembled at the Center for Research and Education in Optics and Lasers CREOL, College of Optics and Photonics, and successful recording of holographic optical elements was demonstrated. Research programs, which will benefit from the requested instrumentation, are in the areas of high power solid state, fiber and semiconductor laser systems, spectral beam combining of high power lasers, and stretching and compression of ultra-short laser pulses. CREOL will be able to develop new holographic optical elements that recently were considered impossible to create. Moreover, new phenomena recently discovered with this laser would pave a way for extension of spectral range of VBG operation to shorter wavelengths in UV and to longer wavelengths in IR.
- Lasers and Masers
- Ceramics, Refractories and Glass
- Test Facilities, Equipment and Methods