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AIST TODAYNo.19 Winter 2006 [ PDF:17.6MB ]

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Doppler-free spectroscopy using continuous-wave optical frequency synthesizer

A continuous-wave optical frequency synthesizer was developed using a monolithic type continuous-wave optical parametric oscillator (cw-OPO) and an optical frequency comb. The cw-OPO was phase-locked to an optical frequency comb that was phase-locked to an atomic clock. The output frequency of the cw-OPO was frequency-shifted with an electro-optic modulator (EOM), which made it possible to tune the frequency continuously over 10 GHz. Furthermore, Doppler-free spectroscopy was performed using the optical frequency synthesizer for a cesium D1 line at 895 nm.
Figure
Figure: Schematic diagram of an optical frequency synthesizer. EOM: electronic optical modulator, frep: repetition rate of optical comb, fceo: carrier envelope offset frequency of optical comb, fbeat: beatfrequency between optical comb and optical parametric oscillator, feom: modulation frequency of EOM, n: large integer.

Relational Information

AIST TODAY Vol.5 , No.10 (2005) p.18-19

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