Journal article
Efficient generation of 1.9 W yellow light by cascaded frequency doubling of a distributed Bragg reflector tapered diode
Department of Photonics Engineering, Technical University of Denmark1
Diode Lasers and LED Systems, Department of Photonics Engineering, Technical University of Denmark2
Norlase ApS3
JENOPTIK Laser GmbH4
Department of Applied Mathematics and Computer Science, Technical University of Denmark5
Department of Physics, Technical University of Denmark6
Risø National Laboratory for Sustainable Energy, Technical University of Denmark7
Watt-level yellow emitting lasers are interesting for medical applications, due to their high hemoglobin absorption, and for efficient detection of certain fluorophores. In this paper, we demonstrate a compact and robust diode-based laser system in the yellow spectral range. The system generates 1.9 W of single-frequency light at 562.4 nm by cascaded single-pass frequency doubling of the 1124.8 nm emission from a distributed Bragg reflector (DBR) tapered laser diode.
The absence of a free-space cavity makes the system stable over a base-plate temperature range of 30 K. At the same time, the use of a laser diode enables the modulation of the pump wavelength by controlling the drive current. This is utilized to achieve a power modulation depth above 90% for the second harmonic light, with a rise time below 40 μs.
Language: | English |
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Year: | 2016 |
Pages: | 9270-9274 |
ISSN: | 15394522 , 00036935 and 1559128x |
Types: | Journal article |
DOI: | 10.1364/AO.55.009270 |
ORCIDs: | Hansen, Anders Kragh , Christensen, Mathias and Jensen, Ole Bjarlin |