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Efficient, high rep rate, large-bore kinetically enhanced copper vapor laser with low (<1  kW/l) specific input power using new thermal assembly

Rev. Sci. Instrum. 80, 106102 (2009); doi:10.1063/1.3237242

Published 12 October 2009

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Bijendra Singh, V. V. Subramaniam, S. R. Daultabad, and Ashim Chakraborty
Laser System Engineering Division, Raja Ramanna Center for Advanced Technology, Indore 452013, India
Large-bore kinetically enhanced copper vapor laser (CVL) based on new thermal assembly consisting of different density zones of insulation material (alumina fiber) around the discharge tube is demonstrated for the first time with efficiency eta>=1% at extremely low specific input power (SIP) of <=1  kW/l. As a result of this longitudinal profiling of the insulation material, efficiency of ~1.2% was achieved at lowest SIP of ~0.75  kW/l. Net reduction in the input power of ~1  kW was observed on using this thermal assembly as compared to nonprofiled thermal assembly. These results show significant improvement (25%–30%) at low input requirements of the laser on using new thermal assembly around the discharge tube with overall electro-optical efficiency eta>=1%. Maximum laser power achieved from the laser was ~78  W at ~9.8  kHz rep rate with efficiency of ~1.4%. This large-bore CVL is also capable of operating efficiently (eta~1%) at high rep rate of −17 kHz with maximum laser power of ~50  W. Performance of the laser under various operating conditions is also presented in this short paper. ©2009 American Institute of Physics
History: Received 17 June 2009; accepted 5 September 2009; published 12 October 2009
Permalink: http://link.aip.org/link/?RSINAK/80/106102/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Lt
    Gas lasers including excimer and metal-vapor lasers
  • 42.55.Wd
    Fiber lasers
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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REFERENCES (12)
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