OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 31 — Nov. 1, 2004
  • pp: 5855–5859

Highly efficient continuous-wave operation of a Nd:YAG rod laser that is side pumped by p-polarized diode laser bars

Ranganathan Kandasamy, Sundar Raghavachari, Puskar Misra, and Sthanu Nathan. T. P  »View Author Affiliations


Applied Optics, Vol. 43, Issue 31, pp. 5855-5859 (2004)
http://dx.doi.org/10.1364/AO.43.005855


View Full Text Article

Enhanced HTML    Acrobat PDF (331 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We report on the performance of highly efficient, high-power continuous-wave (CW) Nd:YAG lasers that are side pumped by p-polarized diode laser beams. In this configuration pump light is directly coupled into the Nd:YAG rod through a threefold symmetric gold-coated flow tube. The polarization direction of our pump diode bars is perpendicular to the rod’s axis (p-polarized). In a closed coupled resonator, a maximum output power of 195 W in multimode operation is obtained for a pump power of 423 W, which corresponds to an optical-to-optical efficiency of 46% and an electrical-to-optical efficiency of 23%. This is, to the best of our knowledge, the highest electrical-to-optical efficiency reported for a CW diode side-pumped Nd:YAG laser. By the pump-power leakage analysis method, we measured the pumping efficiency to be approximately 94%. The high efficiency of the system can be attributed to wing pumping, which results in uniform pump-light distribution and better pumping efficiency because of the use of p-polarized pump beams.

© 2004 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.5560) Lasers and laser optics : Pumping

History
Original Manuscript: April 15, 2004
Revised Manuscript: July 20, 2004
Manuscript Accepted: July 20, 2004
Published: November 1, 2004

Citation
Ranganathan Kandasamy, Sundar Raghavachari, Puskar Misra, and Sthanu Nathan. T. P, "Highly efficient continuous-wave operation of a Nd:YAG rod laser that is side pumped by p-polarized diode laser bars," Appl. Opt. 43, 5855-5859 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-31-5855


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. W. F. Krupke, “Advanced diode-pumped solid-state laser (DPSSLs): near term trends and future prospects,” in Advanced High-Power Lasers, M. Osinski, H. T. Powell, K. Tyoda, eds., Proc SPIE3889, 21–32 (2000). [CrossRef]
  2. W. A. Clarkson, D. C. Hanna, “Efficient Nd:YAG laser end pumped by a 20-W diode laser bar,” Opt. Lett. 21, 869–871 (1996). [CrossRef] [PubMed]
  3. Y. -F. Chen, Y. P. Lan, S. C. Wang, “Efficient high-power diode-end-pumped TEM00 Nd:YVO4 laser with planar cavity,” Opt. Lett. 25, 1016–1018 (2000). [CrossRef]
  4. S. C. Tidwell, J. F. Seamans, M. S. Bowers, “Highly efficient 60-W TEM00 cw diode-end-pumped Nd:YAG laser,” Opt. Lett. 18, 116–118 (1993). [CrossRef] [PubMed]
  5. Y. F. Chen, “Design criteria for concentration optimization in scaling diode end-pumped lasers to high powers: influence of thermal fracture,” IEEE J. Quantum Electron. 35, 234–239 (1999) [CrossRef]
  6. A. Takada, Y. Akiyama, T. Takase, S. Yoshida, H. Yuasa, A. Ono, “Highly efficient operation of diode laser transversely pumped high power Nd:YAG rod laser,” in Advanced High-Power Lasers, M. Osinski, H. T. Powell, K. Tyoda, eds., Proc SPIE3889, 216–223 (2000). [CrossRef]
  7. M. Sato, “Thermally uniform slab yields high,” Laser Focus World 37, 29–31 (2001).
  8. B. J. Le Garrec, G. J. Raze, P. Y. Thro, M. Gilbert, “High-average-power diode-array pumped frequency doubled YAG laser,” Opt. Lett. 21, 1990–1992 (1996). [CrossRef]
  9. H. Wang, W. Huang, Z. Zhou, H. Cao, “Experimental study of high power and high efficiency cw diode-side-pumped Nd:YAG laser,” Opt. Laser Technol. 36, 69–73 (2004). [CrossRef]
  10. T. Kojima, K. Yasui, “Efficient diode side-pumping configuration of a Nd:YAG rod laser with diffusive cavity,” Appl. Opt. 36, 4981–4984 (1997). [CrossRef] [PubMed]
  11. K. S. Lai, P. B. Puha, R. F. Wu, Y. L. Lim, E. Lau, S. W. Toh, B. T. Toh, A. Chng, “120-W continuous wave diode-pumped Tm:YAG laser,” Opt. Lett. 25, 1591–1593 (2000). [CrossRef]
  12. S. Fujikawa, K. Furuta, K. Yasui, “28% electrical efficiency operation of a diode-side-pumped Nd:YAG rod laser,” Opt. Lett. 26, 602–604 (2001). [CrossRef]
  13. S. Lee, S. K. Kim, M. Yun, H. S. Kim, B. H. Cha, H.-J. Moon, “Design and fabrication of diode-side-pumped Nd:YAG laser with a diffusive optical cavity for 500-W output power,” Appl. Opt. 41, 1089–1094 (2002). [CrossRef] [PubMed]
  14. D. Golla, M. Bode, S. Konke, W. Schone, F. Von Alvensleben, A. Tunnermann, “High power operation of Nd:YAG rod lasers pumped by fiber-coupled diode lasers,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D. C., 1996), 198–201.
  15. H.-J. Moon, J. Yi, J. Han, B. Cha, J. Lee, “Efficient diffusive reflector-type diode side-pumped Nd:YAG rod laser with an optical-slope efficiency of 55%,” Appl. Opt. 38, 1772–1776. (1999). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited