Abstract

We report a new source of cw, single-frequency radiation in the blue, offering extended tunability and practical powers in a compact, all-solid-state design. The device is based on a green-pumped, cw, singly resonant optical parametric oscillator using MgO-doped stoichiometric lithium tantalate (MgO:sPPLT) as the nonlinear material. By internal second-harmonic generation of the resonant near-infrared signal radiation in a 5mm BiB3O6 crystal, we generate nearly 450mW of cw, single-frequency blue power over a tunable range of 425489nm with a linewidth of 8.5MHz and a Gaussian spatial beam profile. The demonstrated wavelength coverage can be further extended by using alternative gratings for the MgO:sPPLT crystal.

© 2008 Optical Society of America

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References

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2008 (1)

2007 (3)

2006 (1)

2005 (1)

2004 (1)

2003 (1)

1995 (1)

Balembois, F.

Brun, A.

Bu, Y. K.

Czeranowsky, C.

Ebrahim-Zadeh, M.

Esteban-Martin, A.

Falcoz, F.

Fayaz, G. R.

Georges, P.

Ghotbi, M.

Heumann, E.

Hirano, Y.

Huber, G.

Jia, F. Q.

Koyata, Y.

Qian, L. S.

Rytz, D.

Sakai, K.

Samanta, G. K.

Sun, Z.

Xue, Q. H.

Zheng, Q.

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Figures (6)

Fig. 1
Fig. 1

Schematic of the intracavity frequency-doubled MgO : sPPLT cw SRO for blue generation.

Fig. 2
Fig. 2

(a) Second-harmonic blue power versus wavelength and (b) outcoupled signal power across the tuning range.

Fig. 3
Fig. 3

Single-frequency blue power, signal power, idler power, and pump depletion as functions of input pump power to the frequency-doubled cw SRO. Solid and dotted curves are guides for the eye.

Fig. 4
Fig. 4

Variation of SHG power with outcoupled signal power, showing a quadratic dependence. Inset, linear dependence of SHG power on the square of outcoupled signal power.

Fig. 5
Fig. 5

Single-frequency spectrum of the generated blue light recorded by a scanning Fabry–Perot interferometer.

Fig. 6
Fig. 6

Energy distribution of the generated blue beam in the far field. (a) Color plot of beam energy. (b) Beam profile in the vertical (V) and horizontal (H) planes and the corresponding Gaussian fits.

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