Abstract

Phase-locked 3:1 division of an optical frequency was achieved with a continuous-wave monolithic optical parametric oscillator (OPO) pumped by a 532-nm Nd:YAG laser, by use of 5% MgO-doped LiNbO3 as a nonlinear optical crystal. The OPO generated signal light (798 nm) with 4-mW power and idler light (1596 nm) with 3-mW power for a pump power of 68 mW. Approximately 2 µW of second harmonics (SH’s) of the idler light was produced by external-cavity-enhanced SH generation by use of a periodically poled LiNbO3 crystal. The beat signal between the signal light and the SH of the idler light was observed with a signal-to-noise ratio of 40 dB at a 10-kHz bandwidth and was successfully phase locked to a signal from a synthesizer through the electro-optic effect of the crystal.

© 1999 Optical Society of America

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References

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T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

A. Douillet and J.-J. Zondy, Opt. Lett. 23, 1259 (1998).
[CrossRef]

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[CrossRef]

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T. Ikegami, S. Slyusarev, S. Ohshima, and E. Sakuma, Opt. Commun. 127, 69 (1996).
[CrossRef]

O. Pfister, M. Murtz, J. S. Wells, L. Hollberg, and J. T. Murray, Opt. Lett. 21, 1387 (1996).
[CrossRef] [PubMed]

1992

1990

Bernard, J. E.

Byer, R. L.

Day, T.

Douillet, A.

Fukuyama, Y.

T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

Hänsch, T. W.

T. W. Hänsch, Opt. Commun. 80, 71 (1990).
[CrossRef]

Hollberg, L.

Ikegami, T.

T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

T. Ikegami, S. Slyusarev, S. Ohshima, and E. Sakuma, Opt. Commun. 127, 69 (1996).
[CrossRef]

Kurosu, T.

T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

Lee, D.

Marmet, L.

Murray, J. T.

Murtz, M.

Nabors, C. D.

Nee, P. T.

Ohshima, S.

T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

T. Ikegami, S. Slyusarev, S. Ohshima, and E. Sakuma, Opt. Commun. 127, 69 (1996).
[CrossRef]

Pfister, O.

Sakuma, E.

T. Ikegami, S. Slyusarev, S. Ohshima, and E. Sakuma, Opt. Commun. 127, 69 (1996).
[CrossRef]

Slyusarev, S.

T. Ikegami, S. Slyusarev, T. Kurosu, Y. Fukuyama, and S. Ohshima, Appl. Phys. B 66, 719 (1998).
[CrossRef]

T. Ikegami, S. Slyusarev, S. Ohshima, and E. Sakuma, Opt. Commun. 127, 69 (1996).
[CrossRef]

Wells, J. S.

Whitford, B. G.

Wong, N. C.

Yang, S. T.

Zondy, J.-J.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup: Nd:YAG laser, monolithic 532-nm Nd:YAG laser; L’s, lenses; λ/2’s, half-wave plates; PBS, polarizing beam splitter; OPO, monolithic OPO; M’s, mirrors; HM, half mirror; PD, photodetector; A’s, amplifiers; DBM, double-balanced mixer; PZT, piezoelectric transducer; PPLN, periodically poled lithium niobate; SHG, second-harmonic generation.

Fig. 2
Fig. 2

OPO output power during long-term free-running operation.

Fig. 3
Fig. 3

Temperature tuning of 3:1 OPO. Each diamond corresponds to a longitudinal mode of the signal light. The frequency difference between two adjacent diamonds is 3 GHz, which corresponds to one free spectral range of the cavity mode of the OPO.

Fig. 4
Fig. 4

Downconverted beat signal (frequency, 12 MHz) between the signal light and the SH of the idler light: (a) Free running (RBW, 10 kHz), (b) Phase locked (RBW, 30 Hz).

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