3.5 W of diffraction-limited green light at 515 nm from SHG of a single-frequency tapered diode laser

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Multi-Watt efficient compact green laser sources are required for a number of applications e.g. within biophotonics, laser pumping and laser displays. We present generation of 3.5 W of diffraction-limited green light at 515 nm by second harmonic generation (SHG) of a tapered diode laser, itself yielding more than 9 W at 1030 nm. SHG is performed in single pass through a cascade of two nonlinear crystals with re-focusing and dispersion compensating optics between the two nonlinear crystals. The laser is single-frequency and the output power is stabilized to better than ±0.4%.
Original languageEnglish
Title of host publicationProceedings of SPIE
Number of pages8
PublisherSPIE - International Society for Optical Engineering
Publication date2017
Article number1008803
Publication statusPublished - 2017
EventNonlinear Frequency Generation and Conversion: Materials and Devices XVI: SPIE Conference 10088 - The Moscone Center, San Francisco, United States
Duration: 28 Jan 20172 Feb 2017
Conference number: 10088


ConferenceNonlinear Frequency Generation and Conversion: Materials and Devices XVI
LocationThe Moscone Center
CountryUnited States
CitySan Francisco
SeriesProceedings of SPIE, the International Society for Optical Engineering

Bibliographical note

Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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    Research areas

  • Tapered diode laser, Second harmonic generation, Visible lasers, 515 nm
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