Share Email Print

Proceedings Paper

Near-IR, blue, and UV generation by frequency conversion of a Tm:YAP laser
Author(s): Brian Cole; Lew Goldberg; Steve Chinn
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We describe generation of near-infrared (944nm, 970nm), blue (472nm, 485nm), and UV (236 nm) light by frequency up-conversion of 2 μm output of a compact and efficient passively Q-switched Tm:YAP laser. The Tm:YAP laser source was near diffraction limited with maximum Q-switched pulse peak power of 190 kW. For second harmonic generation (SHG) of NIR, both periodically poled lithium niobate (PPLN) and lithium tri-borate (LBO) were evaluated, with 58% conversion efficiency and 3.1 W of 970 nm power achieved with PPLN. The PPLN 970nm emission was frequency doubled in 20mm long type I LBO, generating 1.1 W at 485nm with a conversion efficiency of 34%. With LBO used for frequency doubling of 2.3 W of 1888 nm Tm:YAP output to 944nm, 860mW was generated, with 37% conversion efficiency. Using a second LBO crystal to generate the 4th harmonic, 545mW of 472nm power was generated, corresponding to 64% conversion efficiency. To generate the 8th harmonic of Tm:YAP laser emission, the 472nm output of the second LBO was frequency doubled in a 7mm long BBO crystal, generating 110 mW at 236nm, corresponding to 21% conversion efficiency.

Paper Details

Date Published: 15 February 2018
PDF: 7 pages
Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 1051112 (15 February 2018); doi: 10.1117/12.2290105
Show Author Affiliations
Brian Cole, U.S. Army RDECOM CERDEC NVESD (United States)
Lew Goldberg, U.S. Army RDECOM CERDEC NVESD (United States)
Steve Chinn, Fulcrum IT Services LLC (United States)

Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

© SPIE. Terms of Use
Back to Top