As diode pumped solid-state lasers become more powerful, improved thermal management techniques are required. Minimizing thermal gradients in the laser increases performance and reduces thermal stress, which can cause failure by fracturing. Two-phase sprays provide an isothermal cooling method capable of dissipating high heat fluxes produced by the laser. A three-dimensional model of a spray-cooled, end-pumped solid-state laser has been developed to examine the temperature distribution within the laser slab. The model includes variable multi-nozzle arrangements, spatial distribution of two-phase heat transfer coefficients within each spray pattern, and non-uniform heat generation. A study has been conducted to minimize the range of surface temperatures across the slab by varying nozzle spacing. Two-dimensional temperature profiles at the sprayed surface and at the slab mid-plane have been generated. Results indicate that two-phase spray cooling can remove large heat fluxes and maintain temperature variations within acceptable limits. A new technique for designing and analyzing two-phase thermal management systems for solid-state lasers has been developed.
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ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
July 11–15, 2004
Charlotte, North Carolina, USA
Conference Sponsors:
- Heat Transfer Division and Fluids Engineering Division
ISBN:
0-7918-4692-X
PROCEEDINGS PAPER
Temperature Distribution in a Diode End-Pumped Solid State Laser Slab Subject to Two-Phase Spray Cooling Available to Purchase
Brian E. Tews,
Brian E. Tews
Mainstream Engineering Corporation, Rockledge, FL
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Gregory S. Cole,
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
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R. Paul Roth,
R. Paul Roth
Mainstream Engineering Corporation, Rockledge, FL
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Kunal Mitra
Kunal Mitra
Florida Institute of Technology, Melbourne, FL
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Brian E. Tews
Mainstream Engineering Corporation, Rockledge, FL
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
R. Paul Roth
Mainstream Engineering Corporation, Rockledge, FL
Kunal Mitra
Florida Institute of Technology, Melbourne, FL
Paper No:
HT-FED2004-56410, pp. 661-666; 6 pages
Published Online:
February 24, 2009
Citation
Tews, BE, Cole, GS, Roth, RP, & Mitra, K. "Temperature Distribution in a Diode End-Pumped Solid State Laser Slab Subject to Two-Phase Spray Cooling." Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. Volume 3. Charlotte, North Carolina, USA. July 11–15, 2004. pp. 661-666. ASME. https://doi.org/10.1115/HT-FED2004-56410
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