DocumentCode
1236503
Title
A kilohertz repetition rate 1.9 μm H2 Raman oscillator
Author
Stewart, Robert B. ; Kung, Robert T V
Author_Institution
ABIOMED, Danvers, MA, USA
Volume
25
Issue
10
fYear
1989
fDate
10/1/1989 12:00:00 AM
Firstpage
2142
Lastpage
2148
Abstract
Raman conversion of a high-repetition-rate Q -switched Nd:YAG laser using a gaseous H2 Raman medium is reported. With a H2 cell placed in a focusing intracavity Raman oscillator, 3 W of average power at 1.9 μm was obtained from a 15-W 1.06-μm laser operating at 2 kHz. Although the pump beam was multimode, the Stokes output was diffraction limited. At kilohertz repetition rates, conversion efficiencies were improved with a flowing gas cell which substantially reduced the thermal lensing effect in the Raman medium. A rate equation approach was used to model the intracavity conversion process
Keywords
Q-switching; Raman lasers; focusing; gas lasers; hydrogen; laser cavity resonators; laser transitions; neodymium; optical pumping; solid lasers; 1.06 micron; 1.9 micron; 15 W; 2 kHz; 3 W; H2 gas; Raman conversion; Raman oscillator; Stokes output; YAG:Nd laser; YAl5O12:Nd; conversion efficiencies; diffraction limited Stokes output; flowing gas cell; focusing intracavity Raman oscillator; gaseous H2 Raman medium; high-repetition-rate Q-switched Nd:YAG laser; intracavity conversion process; kilohertz repetition rate; multimode laser beam; pump beam; rate equation approach; thermal lensing effect; Diffraction; Equations; Gas lasers; Laser beams; Laser excitation; Laser modes; Oscillators; Power lasers; Pump lasers; Thermal lensing;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/3.35728
Filename
35728
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