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.

Författare

Hans Lindberg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

M Strassner

Laboratoire de Photonique et de Nanostructures

Kungliga Tekniska Högskolan (KTH)

Jörgen Bengtsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

IEEE Photonics Technology Letters

1041-1135 (ISSN)

Vol. 16 5 1233-1235

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/LPT.2004.826235