Kilowatt CW Cryogenic 940-nm Diode Lasers
| Autor: | S Ross, T Ta, K J Linden, R Feeler, W R Neal |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Ytterbium
Materials science Physics::Instrumentation and Detectors business.industry Physics::Optics chemistry.chemical_element Cryogenics Liquid nitrogen Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Semiconductor laser theory law.invention Optical pumping chemistry law Diode-pumped solid-state laser Optoelectronics Physics::Atomic Physics Electrical and Electronic Engineering business Diode |
| Zdroj: | IEEE Photonics Technology Letters. 22:1452-1454 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2010.2060718 |
| Popis: | Cryogenically cooled high-power Yb:YAG disk lasers are ideally optically pumped with cryogenically cooled 940-nm diode lasers, but commercially available diode lasers are not optimized for 940-nm cryogenic emission. Special epitaxial designs were used to fabricate diode laser arrays which were mounted on liquid nitrogen impingement heat exchangers. The improved cryogenic thermal characteristics resulted in reduced laser threshold currents and CW operating powers > 1 kW for diode laser arrays with a 1 × 5 cm footprint. The industrial availability of liquid nitrogen makes this mode of operation an excellent candidate for industrial lasers, eliminating large, noisy, expensive and inefficient water-cooled heat exchangers. |
| Databáze: | OpenAIRE |
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