High-power optically pumped 1550-nm VECSEL with a bonded silicon heat spreader
Artikel i vetenskaplig tidskrift, 2004

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.


Hans Lindberg

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

M Strassner

Laboratoire de Photonique et de Nanostructures

Kungliga Tekniska Högskolan (KTH)

Jörgen Bengtsson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

IEEE Photonics Technology Letters

1041-1135 (ISSN) 19410174 (eISSN)

Vol. 16 5 1233-1235


Elektroteknik och elektronik



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