Improving the efficiency of high-power diode lasers using diamond heat sinks

Journal Article · Wed Jun 23 00:00:00 EDT 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N04ABEH014233· OSTI ID:21471369

Parashchuk, Valentin V ^[1]; Baranov, V V; Telesh, E V ^[2]; Mien, Vu Doan; Luc, Vu Van; Truong, Pham Van ^[3]; Belyaeva, A K

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1. B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk (Belarus)
2. Belarusian State University of Informatics and Radioelectronics, Minsk (Belarus)
3. Institute of Materials Science, Vietnamese Academy of Science and Technology, Hanoi (Viet Nam)

Using multifunctional ion beam and magnetron sputtering systems, we have developed chemical and vacuum techniques for producing metallic coatings firmly adherent to various surfaces, with application to copper and diamond heat sinks for diode lasers. Conditions have been optimised for mounting diode lasers and bars using the proposed metallisation processes, and significant improvements in the output parameters of the devices have been achieved. The power output of cw laser diodes on diamond heat sinks increases by up to a factor of 2, the linear (working) portion of their power-current characteristic becomes markedly broader, and their slope efficiency increases by a factor of 1.5 - 2 relative to that of lasers on copper heat spreaders. The use of diamond heat sinks extends the drive current range of pulsed diode bars by a factor of 2 - 3 and enables them to operate at more than one order of magnitude longer pump pulse durations (up to milliseconds) when the pulse repetition rate is at least 10 Hz. (lasers)

• OSTI ID: 21471369
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 4; Other Information: DOI: 10.1070/QE2010v040n04ABEH014233; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COATINGS
COPPER
DIAMONDS
DIODE-PUMPED SOLID STATE LASERS
HEAT SINKS
ION BEAMS
MAGNETRONS
PULSES
SPUTTERING
SURFACES
BEAMS
CARBON
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
LASERS
METALS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
MINERALS
NONMETALS
SINKS
SOLID STATE LASERS
TRANSITION ELEMENTS