Abstract

The parametric generation of broad spectral bandwidths by the use of suitable phase-matching geometries is reported. Greater than 100-nm simultaneous bandwidth in the visible is generated in a collimated signal beam from a novel, noncollinear phase-matching geometry in a β-barium borate optical parametric oscillator, which is pumped by the collimated output of a Q-switched and frequency-tripled Nd:YAG laser. Dispersive cavity tuning of the optical parametric oscillator by use of a rotatable Littrow-mounted grating, with a static crystal and pump configuration, is also described. A tunable bandwidth of >100 nm is also demonstrated.

© 1997 Optical Society of America

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References

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  1. Y. Cui, D. E. Withers, C. F. Rae, C. J. Norrie, Y. Tang, B. D. Sinclair, W. Sibbett, and M. H. Dunn, Opt. Lett. 18, 122 (1993).
    [CrossRef] [PubMed]
  2. P. Brockman, C. H. Bair, J. C. Barnes, R. V. Hess, and E. V. Browell, Opt. Lett. 11, 712 (1986).
    [CrossRef] [PubMed]
  3. C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

1993 (1)

1986 (1)

1985 (1)

C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

Bair, C. H.

Barnes, J. C.

Brockman, P.

Browell, E. V.

Chen, C.

C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

Cui, Y.

Dunn, M. H.

Hess, R. V.

Jiang, A.

C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

Norrie, C. J.

Rae, C. F.

Sibbett, W.

Sinclair, B. D.

Tang, Y.

Withers, D. E.

Wu, B.

C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

You, G.

C. Chen, B. Wu, A. Jiang, and G. You, Sci. Sin. Ser. B 28, 235 (1985).

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Figures (5)

Fig. 1
Fig. 1

(a) k-vector diagram and (b) k-space ellipsoid for the type I e:o+o noncollinear phase-matching geometry in a uniaxial crystal.

Fig. 2
Fig. 2

Tuning curve for the signal wave for the type  I noncollinear BBO OPO at a pump wavelength of 355  nm and a pump direction of 35.9°. Contours show the phase-mismatching Δk (interval 50 mm-1).

Fig. 3
Fig. 3

Detailed phase-mismatching curves for the θs=31.5° solution in BBO, showing the effects of the OPO signal beam divergence and pump beam divergence on the spectral bandwidth.

Fig. 4
Fig. 4

Experimental setup for the noncollinear BBO OPO: M1–M3, pump steering mirrors; M4, M5, OPO resonator mirrors; Pol., polarizer; SHG, second-harmonic generation; THG, third-harmonic generation.

Fig. 5
Fig. 5

Spectral profile of a single pulse from the polychromatic phase-matched BBO OPO.

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