Short wavelength red-emitting AlGaInP-VECSEL exceeds 1.2 W continuous-wave output power
| Autor: | M. Eichfelder, Thomas Schwarzbäck, Wolfgang-Michael Schulz, Robert Roßbach, Michael Jetter, Peter Michler |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) business.industry Slope efficiency Far-infrared laser General Engineering Physics::Optics General Physics and Astronomy Distributed Bragg reflector Laser law.invention Vertical-cavity surface-emitting laser Optics law Optoelectronics Laser power scaling business Fabry–Pérot interferometer Tunable laser |
| Zdroj: | Applied Physics B. 102:789-794 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-010-4213-5 |
| Popis: | We present a vertical external cavity surface-emitting laser system based on a multi-quantum-well structure with 20 compressively strained GaInP quantum wells for an operation wavelength of around 665 nm with a monolithic integrated distributed Bragg reflector. With the help of an intra-cavity diamond heatspreader the laser operates in continuous-wave mode. Operation with a TEM00 Gaussian beam profile and a beam propagation factor of M2≤1.05 is shown as well as a high resolution spectrum of the laser line, which shows the etalon effect of the diamond. The laser can be operated at a maximum output power exceeding 1.2 W with a slope efficiency of ηdiff=18%. At maximum output power the wavelength of the laser resonance is at 670 nm, which is shortest reported until now at powers exceeding 1 W. By rotating a birefringent filter in an extended folded cavity arrangement a wavelength tuning of 21 nm was attained. |
| Databáze: | OpenAIRE |
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