Abstract

The operation of a continuous-wave optical parametric oscillator (OPO) based on periodically-poled RbTiOAsO4 (PPRTA) and using a pump-enhanced cavity configuration is described. The OPO was pumped by a single-frequency Nd:YVO4 laser and temperature tuning ranges of 1.525–1.583µm and 3.245–3.520µm were achieved at the signal and idler, respectively. The external threshold was 250mW and up to 87mW of idler was generated. Fine-tuning behavior of the OPO and material quality of the PPRTA were investigated. We believe this to be the first reported example of an externally-pumped cw OPO based on PPRTA.

© 2002 Optical Society of America

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References

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  1. K. Schneider, P. Kramper, S. Schiller and J. Mlynek, �??Toward an optical synthesizer: a single-frequency parametric oscillator using periodically poled LiNbO3,�?? Opt. Lett. 22, 1293-1295 (1997).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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Appl. Opt.

Appl. Phys. B

M. Peltz, U. Bäder, A. Borsutzky, R. Wallenstein, J. Hellström, H. Karlsson, V. Pasiskevicius and F. Laurell, �??Optical parametric oscillators for high pulse energy and high average power operation based on large aperture periodically poled KTP and RTA,�?? Appl. Phys. B 73, 663-670 (2001).
[CrossRef]

K. Fradkin-Kashi, A. Arie, P. Urenski and G. Rosenman, �??Characterization of optical and nonlinear properties of periodically-poled RbTiOAsO4 in the mid-infrared range via difference-frequency generation,�?? Appl. Phys. B 71, 251-255 (2000).
[CrossRef]

Appl. Phys. Lett.

I.D. Lindsay, C. Petridis, M.H. Dunn and M. Ebrahimzadeh, �??Continuous-wave pump-enhanced singly resonant optical parametric oscillator pumped by an extended-cavity diode laser,�?? Appl. Phys. Lett. 78, 871-873 (2001).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Commun.

D.R. Weise, U. Strö�?ner, A. Peters, J. Mlynek, S. Schiller, A. Arie, A. Skliar and G. Rosenman, �??Continuous-wave 532-nm-pumped singly resonant optical parametric oscillator with periodically poled KTiOPO4,�?? Opt. Commun. 184, 329-333 (2000)
[CrossRef]

Opt. Lett.

A. Carleton, D.J.M. Stothard, I.D. Lindsay and M.H. Dunn, �??Compact, continuous-wave, singly-resonant optical parametric oscillator based on periodically-poled RbTiOAsO4 in a Nd:YVO4 laser,�?? to be published, Opt. Lett. (2003).
[PubMed]

G.A. Turnbull, D. McGloin, I.D. Lindsay, M. Ebrahimzadeh and M.H. Dunn, �??Extended mode-hop-free tuning by use of a dual-cavity, pump-enhanced optical parametric oscillator,�?? Opt. Lett. 25, 341-343 (2000).
[CrossRef]

K. Schneider, P. Kramper, S. Schiller and J. Mlynek, �??Toward an optical synthesizer: a single-frequency parametric oscillator using periodically poled LiNbO3,�?? Opt. Lett. 22, 1293-1295 (1997).
[CrossRef]

T.J. Edwards, G.A. Turnbull, M.H. Dunn, M. Ebrahimzadeh, H. Karlsson, G. Arvidsson and F. Laurell, �??Continuous-wave singly resonant optical parametric oscillator based on periodically poled RbTiOAsO4,�?? Opt. Lett. 23, 837-839 (1998).
[CrossRef]

A. Garashi, A. Arie, A. Skliar and G. Rosenman, �??Continuous-wave optical parametric oscillator based on periodically poled KTiOPO4,�?? Opt. Lett. 23, 1739-1741 (1998)
[CrossRef]

I.D. Lindsay, G.A. Turnbull, M.H. Dunn and M. Ebrahimzadeh, �??Doubly-resonant continuous-wave optical parametric oscillator pumped by a single-mode diode laser,�?? Opt. Lett. 23, 1889-1891 (1998).
[CrossRef]

A.J. Henderson, P.M. Roper, L.A. Borschowa and R.D. Mead, �??Stable, continuously tunable operation of a diode-pumped doubly resonant optical parametric oscillator,�?? Opt. Lett. 25, 1264-1266 (2000).
[CrossRef]

E.V. Kovalchuk, D. Dekorsy, A.I. Lvovsky, C. Braxmaier, J. Mlynek, A. Peters and S. Schiller, �??Highresolution Doppler-free molecular spectroscopy with a continuous-wave optical parametric oscillator,�?? Opt. Lett. 26, 1430-1432 (2001).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Performance mapping across aperture of PPRTA crystal in IC-SRO. Lefthand plot shows laser output power alone, with OPO operation suppressed. Righthand plot shows idler output power of the IC-SRO when operating.

Fig. 2.
Fig. 2.

Variation of PE-SRO signal (1.560µm) leakage, idler (3.346µm) output powers and circulating pump power with incident pump power. Circulating power was inferred from leakage powers and measured output mirror transmission levels.

Fig. 3.
Fig. 3.

Temperature tuning of the PPRTA PE-SRO. Theoretical data was calculated from the Sellmeier equation of [14] and the temperature coefficients of [12].

Fig. 4.
Fig. 4.

Fine tuning of PE-SRO output frequencies by pump frequency tuning. Lower plot shows tuning over full 3GHz continuous tuning range of pump laser. Upper plot shows magnified section of signal tuning range where continuous OPO tuning occurred. Free spectral range of the OPO cavity at the signal (FSRs) is indicated on both plots.

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