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arXiv · 2207.04626

Gallium-nitride-based interference-filter-stabilized external cavity diode laser with a surface-activated-bonded output coupler

Hisashi Ogawa·Tatsuya Kemmochi·Tetsushi Takano
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Abstract

We report on an interference-filter-stabilized external cavity diode laser using a gallium-nitride-based violet laser diode. Surface-activated-bonded glass substrates were employed as cat's eye output couplers in order to suppress power degradation due to optical damage. From the results of a long-term frequency-stabilization test, mode-hop-free operation for about one week was demonstrated. After a continuous operation of about three weeks, the power degradation was less than 10$\%$. The results show the potential of such interference-filter-stabilized external cavity diode lasers for practical and portable quantum technologies such as atomic clocks or atomic interferometers.

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Hisashi Ogawa, Tatsuya Kemmochi, Tetsushi Takano. 2022-09-22. Gallium-nitride-based interference-filter-stabilized external cavity diode laser with a surface-activated-bonded output coupler. https://doi.org/10.35848/1347-4065%2Fac956a

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