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Proceedings Paper

High-power dual pump cw Ti:sapphire laser: setting new records
Author(s): Scott C. Shukes; Robert Splinter; M. Yasin Akhtar Raja; Jenn-Ying Liu; George P. Tatsis
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Paper Abstract

A Ti:Sapphire CW laser operating at room temperature provides an output power of 6.7 W, limited by available pump power. A Z-configuration oscillator (LEXEL laser) was modified to operate in dual pump mode. The Ti:Sapphire laser was pumped by two independent 13 watt CW Ar-ion lasers. The two Ar-ion lasers were focussed on each end of the Ti:Sapphire crystal. The Ti:Sapphire laser covers the visible red to the near infrared regime (690-1100 nm) with four sets of mirrors. A three plate birefringent filter was used for wavelength tuning, with a 0.5 nm bandwidth. The spectral analysis was performed with a monochromator with a resolution of 0.2 nm. A maximum output of 6.7 Watt was achieved at 790 nm, in TEM00 mode, corresponding to a conversion efficiency of 26%. The Ti:Sapphire was operating below saturation levels at 26 W total pump. Laser output without the birefringent filter resulted in spontaneous mode hopping leading to output wavelength fluctuations between several resonant wavelengths. Double pumping resulted in higher output powers than single pumping with corresponding total input power. The flat tuning curve in combination with the high output powers makes this laser an ideal source for spectral investigations of laser tissue interaction.

Paper Details

Date Published: 10 April 1995
PDF: 6 pages
Proc. SPIE 2379, Solid State Lasers and Nonlinear Crystals, (10 April 1995); doi: 10.1117/12.206504
Show Author Affiliations
Scott C. Shukes, Univ. of North Carolina/Charlotte (United States)
Robert Splinter, Carolinas Medical Ctr. (United States)
M. Yasin Akhtar Raja, Univ. of North Carolina/Charlotte (United States)
Jenn-Ying Liu, LEXEL Laser (United States)
George P. Tatsis, Carolinas Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 2379:
Solid State Lasers and Nonlinear Crystals
Gregory J. Quarles; Leon Esterowitz; Lap Kin Cheng, Editor(s)

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