Title :
Chirped volume Bragg gratings as broad spectrum focusing or collimating elements
Author :
Divliansky, I. ; SeGall, Marc ; Ott, Daniel ; Glebov, Leonid
Author_Institution :
Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA
Abstract :
We demonstrate the use of chirped volume Bragg gratings (VBGs) as flat focusing elements for wavelengths different than the wavelength used for recording of the Bragg grating and with efficiencies of up to 95%. The VBGs were recorded in photo-thermo-refractive (PTR) glass with laser generating at 325 nm and were tested with wavelengths ranging from visible up to near IR spectral regions and beam sizes from one to three millimeters, achieving diffraction limited quality in all cases.
Keywords :
Bragg gratings; light diffraction; optical collimators; optical focusing; optical glass; VBG; beam sizes; broad spectrum focusing; chirped volume Bragg gratings; collimating elements; diffraction limited quality; flat focusing elements; near IR spectral region; photothermorefractive glass; visible spectral region; wavelength 325 nm; Bragg gratings; Chirp; Diffraction; Focusing; Glass; Laser beams; Optical beams;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
