High-power single-frequency 620 nm laser based on diamond Raman and intracavity frequency doubling

Xuezong Yang*, Ondrej Kitzler, David J. Spence, Robert J. Williams, Zhenxu Bai, Soumya Sarang, Lei Zhang, Yan Feng, Richard P. Mildren

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

High-power single-longitudinal-mode (SLM) lasers are crucial for applications such as LIGO, sodium guide stars, isotope separation and atom cooling, but are challenging due to gain profile inhomogeneities and spatial hole burning. This work shows that a SLM 620 nm laser is firstly achieved using a standing-wave diamond Raman resonator with intracavity second harmonic generation (SHG). In addition to the benefits of the spatial hole burning-free gain medium, SHG provides a valuable additional mechanism for increasing gain competition and therefore enhancing SLM stability. Nascent secondary modes experience double the nonlinear loss in the SHG crystal due to the role of sum frequency generation with the primary mode [1]. A further feature of the current external standing-wave cavity design is that the cavity is non-resonant at the pump frequency, thereby allowing the laser to be pumped without mutual control of the wavelength and cavity length and by using multi-longitudinal-mode (MLM) lasers with a spacing different to the free-spectral-range of the diamond Raman laser.

Original languageEnglish
Title of host publicationCLEO/Europe-EQEC 2019
Subtitle of host publicationConference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages1
ISBN (Electronic)9781728104690
ISBN (Print)9781728104706
DOIs
Publication statusPublished - Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
CountryGermany
CityMunich
Period23/06/1927/06/19

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Yang, X., Kitzler, O., Spence, D. J., Williams, R. J., Bai, Z., Sarang, S., ... Mildren, R. P. (2019). High-power single-frequency 620 nm laser based on diamond Raman and intracavity frequency doubling. In CLEO/Europe-EQEC 2019: Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/CLEOE-EQEC.2019.8873408