TITLE

Nonlinear refraction in potassium gadolinium tungstate: An efficient Raman crystal and laser host

AUTHOR(S)
Dharmadhikari, J.A.; Dharmadhikari, A.K.; Kumar, G.R.
PUB. DATE
September 2003
SOURCE
Applied Physics Letters;9/29/2003, Vol. 83 Issue 13, p2527
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Third order nonlinear optical properties of a promising laser host and Raman shifting crystal—potassium gadolium tungstate are reported. The intensity dependent refractive index, n[sub 2], measured at 1064 and 532 nm are 8.76×10[sup -16] and 43.1×10[sup -16] cm[sup 2] W[sup -1], respectively, using 35 ps pulses by the z-scan technique. The two-photon absorption (TPA) coefficient β at 532 nm is 0.29 cm GW[sup -1]. Furthermore, we examine the behavior of self-focusing and nonlinear lens inside a laser resonator and discuss its influence on laser performance. © 2003 American Institute of Physics.
ACCESSION #
10894480

 

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