Abstract

We report a cw optical parametric oscillator (OPO) in a novel architecture comprising two nonlinear crystals in a single cavity, providing two independently tunable pairs of signal and idler wavelengths. Based on a singly resonant oscillator design, the device permits access to arbitrary signal and idler wavelength combinations within the parametric gain bandwidth and reflectivity of the OPO cavity mirrors. Using two identical 30mm long MgO:sPPLT crystals in a compact four-mirror ring resonator pumped at 532nm, we generate two pairs of signal and idler wavelengths with arbitrary tuning across 8501430nm, and demonstrate a frequency separation in the resonant signal waves down to 0.55THz. Moreover, near wavelength-matched condition, coherent energy coupling between the resonant signal waves, results in reduced operation threshold and increased output power. A total output power >2.8W with peak-to-peak power stability of 16% over 2h is obtained.

© 2011 Optical Society of America

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References

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  1. M. Ebrahim-Zadeh, Handbook of Optics (OSA, 2010), Vol.  IV, Chap. 17, p. 1.
  2. J. E. Schaar, K. L. Vodopyanov, and M. M. Fejer, Opt. Lett. 32, 1284 (2007).
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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2010 (2)

M. Ebrahim-Zadeh, Handbook of Optics (OSA, 2010), Vol.  IV, Chap. 17, p. 1.

M. Tang, H. Minamide, Y. Wang, T. Notake, S. Ohno, and H. Ito, Opt. Lett. 35, 1698 (2010).
[CrossRef] [PubMed]

2009 (2)

2007 (3)

Bretenaker, F.

Breunig, I.

Buse, K.

Chaitanya Kumar, S.

Drag, C.

Ebrahim-Zadeh, M.

Fayaz, G. R.

Fejer, M. M.

Ito, H.

Mhibik, O.

Minamide, H.

My, T.-H.

Notake, T.

Ohno, S.

Robin, O.

Samanta, G. K.

Schaar, J. E.

Sowade, R.

Tang, M.

Vodopyanov, K. L.

Wang, Y.

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Figures (4)

Fig. 1
Fig. 1

Experimental design of the T-SRO. H 1 4 : half-wave plate, BS 1 2 : polarizing beam splitter, L 1 2 : lens, M: mirror, X 1 2 : MgO:sPPLT crystal in the oven.

Fig. 2
Fig. 2

Signal spectra of the T-SRO at independently varied crystal temperatures, T 1 and T 2 . Pump power P 1 = P 2 = 5 W .

Fig. 3
Fig. 3

Variation of the total output power from the S-SRO and T-SRO with the input pump power. Lines to guide to the eye.

Fig. 4
Fig. 4

Power stability of the two idler beams of the T-SRO under coherently coupled operation. Signal wavelength is 922.46 nm (idler 1256.84 nm ).

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