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Frequency locking of tunable diode lasers to a stabilized ring-cavity resonator

Ayan Banerjee·Dipankar Das·Umakant D. Rapol·Vasant Natarajan
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Abstract

We demonstrate a technique for locking the frequency of a tunable diode laser to a ring-cavity resonator. The resonator is stabilized to a diode laser which is in turn locked to an atomic transition, thus giving it absolute frequency calibration. The ring-cavity design has the principal advantage that there is no feedback destabilization of the laser. The cavity has a free-spectral range of 1.3 GHz and $Q$ of about 35, which gives robust locking of the laser. The locked laser is able to track large scans of the cavity.

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Ayan Banerjee, Dipankar Das, Umakant D. Rapol, Vasant Natarajan. 2002-04-19. Frequency locking of tunable diode lasers to a stabilized ring-cavity resonator. https://doi.org/10.1364/ao.43.002528

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