NDLI: 72-W vertical-external-cavity surface-emitting laser with 1180-nm emission for laser guide star adaptive optics

Content Provider	IET Digital Library
Author	Kantola, E. Penttinen, J. P. Ranta, S. Guina, M.
Abstract	We report a high-power optically-pumped vertical-external-cavity surface-emitting laser emitting at around 1180 nm. The free-running laser produced 72 W of output power at a heatsink temperature of 0°C and 53 W near room temperature (20°C). The GaAs-based gain mirror was bonded to a 2-mm-thick diamond attached to a TEC-cooled copper mount in order to enable efficient heat extraction for high-power operation. Moreover, the spectrum of the laser was narrowed down to 0.06 nm by employing a combination of a birefringent filter and an etalon inside the cavity which yielded a maximum of 19 W at a heatsink temperature of 20°C. The demonstration opens a new perspective for the realisation of sodium laser guide star adaptive optics employing frequency doubling of 1180 nm radiation.
Starting Page	1135
Ending Page	1137
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 19, Sep (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2018.6225
Journal	Electronics Letters
Publisher Date	2018-08-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Optics Amplification Artificial Guide Stars Birefringence Birefringent Filter Design of Specific Laser System Diamond Free-running Laser Frequency Conversion Frequency Doubling GaAs GaAs-based Gain Mirror Gallium Arsenide Heat Extraction Heatsink Temperature High-power Operation High-power Optically-pumped Vertical-external-cavity Surface-emitting Laser III-V SemiConductor Indium Compound Laser Accessories And Instrumentation Laser Application Laser Beam Laser Beam Application Laser Beam Characteristic And Interactions Laser Beam Interactions And Property Laser Cavity Resonator Laser Mirrors Laser Resonator And Cavities Lasing Action in SemiConductor Optical Coatings And Filter Optical Filter Optical Harmonic Generation Optical Lenses And Mirrors Optical Pumping Other Astronomical Technique Parametric Oscillation Power 19.0 W Power 53.0 W Power 72.0 W Semiconductor Laser Size 2 Mm Sodium Laser Guide Star Adaptive Optics Spectral And Other Filter Surface Emitting Laser Diode TEC-cooled Copper Mount Temperature 0.0 DegC Temperature 20.0 DegC Wavelength 1180.0 Nm
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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