Share Email Print
cover

Proceedings Paper • new

Optical parametric oscillation in a random poly-crystalline medium: ZnSe ceramic
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We demonstrate an optical parametric oscillator (OPO) based on random phase matching in a polycrystalline χ(2) material, ZnSe. The subharmonic OPO utilized a 1.5-mm-long polished ZnSe ceramic sample placed at the Brewster's angle and was synchronously pumped by a Kerr-lens mode-locked Cr:ZnS laser with a central wavelength of 2.35 μm, a pulse duration of 62 fs, and a repetition frequency of 79 MHz. The OPO had a 90-mW pump threshold, and produced an ultrabroadband spectrum spanning 3-7.5 μm. The observed pump depletion was as high as 79%. The key to success in achieving the OPO action was choosing the average grain size of the ZnSe ceramic to be close to the coherence length (~ 100 μm) for our 3-wave interaction. This is the first OPO that uses random polycrystalline material with quadratic nonlinearity and the first OPO based on ZnSe. Very likely, random phase matching in ZnSe and similar random polycrystalline materials (ZnS, CdS, CdSe, GaP) represents a viable route for generating few-cycle pulses and multi-octave frequency combs, thanks to a very broadband nonlinear response.

Paper Details

Date Published: 15 February 2018
PDF: 9 pages
Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 1051615 (15 February 2018); doi: 10.1117/12.2292765
Show Author Affiliations
Qitian Ru, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Taiki Kawamori, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Nathaniel Lee, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Xuan Chen, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Kai Zhong, Tianjin Univ. (China)
Mike Mirov, IPG Photonics - Mid-Infrared Lasers (United States)
Sergey Vasilyev, IPG Photonics - Mid-Infrared Lasers (United States)
Sergey B. Mirov, The Univ. of Alabama at Birmingham (United States)
Konstantin L. Vodopyanov, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 10516:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII
Konstantin L. Vodopyanov; Kenneth L. Schepler, Editor(s)

© SPIE. Terms of Use
Back to Top