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Improved spectral properties of an optically pumped semiconductor disk laser using a thin diamond heat spreader as an intracavity filter
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
2005 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 17, no 7, 1363-1365 p.Article in journal (Refereed) Published
Abstract [en]

This letter describes an optically pumped high-power InP-based semiconductor disk laser with a thin (50 mu m) diamond heat spreader bonded to the surface of the gain chip. The diamond heat spreader performs the multiple functions of heat removal, spectral filtering, and wavelength stabilization by utilizing the high thermal conductivity and the low thermooptic coefficient of diamond, along with the large free-spectral range of a thin intracavity etalon. A pump-power-limited output power of 680 mW at 1.55 mu m is demonstrated at a heat sink temperature of -30 degrees C, and 140 mW at room temperature. The spectral width was measured to be less than 0.08 nm and the spectral drift with temperature and pump power as low as 0.03 nm/degrees C and 0.14 nm/W, respectively.

Place, publisher, year, edition, pages
2005. Vol. 17, no 7, 1363-1365 p.
Keyword [en]
disk laser, external cavity, heat spreader, high power laser, InGaAsP, intracavity filter, semiconductor laser, spectral properties, surface-emitting laser, vertical external-cavity surface-emitting laser (VECSEL)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-37815DOI: 10.1109/LPT.2005.848405ISI: 000230052900001ScopusID: 2-s2.0-23844496195OAI: diva2:435303
QC 20110818Available from: 2011-08-18 Created: 2011-08-17 Last updated: 2011-08-18Bibliographically approved

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