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High-power optically pumped 1550-nm VECSEL with a bonded silicon heat spreader
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
2004 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 16, no 5, 1233-1235 p.Article in journal (Refereed) Published
Abstract [en]

We present an optically pumped 1550-nm vertical-external-cavity surface-emitting laser with improved output power and operating temperature using a bonded heat spreader. The laser comprises an InGaAsP-based gain element, with a resonant periodic gain structure on top of a distributed Bragg reflector, and a high reflectivity spherical mirror as the external reflector. Heat transport is enhanced by a Si heat spreader bonded to the InGaAsP surface by liquid capillary bonding. Optical pumping is achieved using a 1250-nm fiber Raman laser. A maximum continuous output power of 250 mW was obtained under multitransverse mode operation at 240 K. Under operation in the fundamental near-Gaussian mode, we obtained a maximum power of 230 mW with a beam quality factor (M-2) of 1.22. At room temperature, the output power was limited to 12 mW.

Place, publisher, year, edition, pages
2004. Vol. 16, no 5, 1233-1235 p.
Keyword [en]
external cavity, heat spreader, high-power laser, InGaAsP, optical pumping, semiconductor laser, surface-emitting laser, vertical cavity
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-44956DOI: 10.1109/LPT.2004.826235ISI: 000221064200003ScopusID: 2-s2.0-2442434501OAI: diva2:453224
QC 20111101Available from: 2011-11-01 Created: 2011-10-26 Last updated: 2011-11-01Bibliographically approved

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Strassner, Martin
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