High-power and high-efficiency frequency doubling of Q-switched Nd:YAG lasers in periodically poled KTP

Author

Wang, S. ; Pasiskevicius, V. ; Laurell, F.

Author_Institution

Dept. of Phys.-Opt., R. Inst. of Technol., Stockholm, Sweden

fYear

1999

fDate

28-28 May 1999

Firstpage

445

Abstract

Summary form only given. Periodically poled ferroelectric crystals such as KTiOPO/sub 4/ (PPKTP) and LiNbO/sub 3/ (PPLN) are increasingly being used as efficient frequency converters due to their high nonlinearities and engineerable phase-matching characteristics. The photorefractive effect and relatively small aperture size of available PPLN crystals limit their applicability for high-pulse-energy green-blue light generation. On the other hand, the PPKTP which, reportedly, sustains higher optical intensity and can be poled over larger aperture thickness has a potential for the generation of high-power green-blue radiation. In this work we report on the investigation of frequency doubling by PPKTP of the flash-lamp pumped Q-switched Nd:YAG lasers. Special attention has been paid to the efficiency limitations at high pulse energies.

Keywords

dielectric polarisation; ferroelectric materials; neodymium; optical harmonic generation; potassium compounds; solid lasers; KTP; KTiOPO4; Q-switched Nd:YAG lasers; YAG:Nd; YAl5O12:Nd; efficiency limitations; flash-lamp pumped lasers; frequency doubling; high pulse energies; high-efficiency; high-power; periodically poled KTP; second harmonic conversion; temperature tuning curves; Apertures; Crystals; Ferroelectric materials; Frequency conversion; Laser excitation; Optical frequency conversion; Optical harmonic generation; Optical pumping; Photorefractive effect; Pump lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-595-1

Type

conf

DOI

10.1109/CLEO.1999.834425

Filename

834425