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Proceedings Paper

A membrane external-cavity surface-emitting laser (MECSEL) with emission around 825 nm
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Paper Abstract

A MECSEL emitting around 825nm is reported. With a tuning range from 807nm to 840 nm, the MECSEL extends the coverage of high beam quality semiconductor based lasers in the short 8XXnm region and opens new perspectives for scanning ground-based water-vapor differential absorption lidar. 1.4W maximum output power has been achieved at room temperature operation and at 12.5W absorbed power using a 532 nm emitting pump laser. The beam quality has been investigated by M2 measurements at different pump power. The effect from a growing pump mode and thermal lensing has been observed as the beam divergence angle decreases and the beam waist radius enlargens with increasing pump power.

Paper Details

Date Published: 2 March 2020
PDF: 8 pages
Proc. SPIE 11263, Vertical External Cavity Surface Emitting Lasers (VECSELs) X, 112630H (2 March 2020); doi: 10.1117/12.2545980
Show Author Affiliations
Hoy-My Phung, Tampere Univ. (Finland)
Hermann Kahle, Tampere Univ. (Finland)
Jussi-Pekka Penttinen, Tampere Univ. (Finland)
Patrik Rajala, Tampere Univ. (Finland)
Sanna Ranta, Tampere Univ. (Finland)
Mircea Guina, Tampere Univ. (Finland)

Published in SPIE Proceedings Vol. 11263:
Vertical External Cavity Surface Emitting Lasers (VECSELs) X
Jennifer E. Hastie, Editor(s)

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