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Updated: Jul 9, 2026
Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
Intracavity LiNbO(3) Fabry-Perot etalon for frequency stabilization and tuning of a single-mode quasi-continuous-wave
Abstract:
We describe an intracavity LiNbO(3) Fabry-Perot etalon for frequency stabilization and tuning of a single-mode quasi-continuous-wave Ti:Al(2)O (3) ring laser. Taking into account the 150-micros pulse duration and the 40-Hz repetition rate of our laser, we achieve stabilization by 266-kHz modulation of 100-V peak-to-peak voltage applied to the electro-optic crystal. Tuning is ensured by the presence of a gain loop that contains a lock-in amplifier reacting with a multimorphous ceramic by means of 0-300-V dc voltage, which causes slight rotation of the LiNbO(3) Fabry-Perot etalon. A continuous frequency scan of 6 GHz was made that potentially can be extended to 6 cm(-1) .
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