Abstract

We report a stable, high-power source of picosecond pulses in the near-infrared based on intracavity second harmonic generation (SHG) of a MgO:PPLN optical parametric oscillator synchronously pumped at 81 MHz by a mode-locked Yb-fiber laser. By exploiting the large spectral acceptance bandwidth for Type I (ooe) SHG in β-BaB2O4 and a 5 mm crystal, we have generated picosecond pulses over 752–860 nm spectral range under minimal angle tuning, with as much as 3.5 W of output power at 778 nm and >2W over 73% of the tuning range, in good beam quality with TEM00 spatial profile and M2<1.4. The SHG output pulses have durations of 15.2 ps, with a spectral bandwidth of 3.4nm at 784 nm. In addition, the oscillator simultaneously provides a signal power of >1W over 1505–1721 nm (25 THz) and idler power >1.8W over 2787–3630 nm (25 THz), corresponding to a total (signal plus idler) tuning range of 1059 nm. The SHG, signal, and idler output exhibit passive long-term power stability better than 1.6%, 1.3%, and 1.6% rms, respectively, over 14 h.

© 2012 Optical Society of America

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2012

2011

2010

2009

2002

1983

E. F. Hilinski and P. M. Rentzepis, Nature 302, 481 (1983).
[CrossRef]

Alam, S.

Breunig, I.

Buse, K.

Chaitanya Kumar, S.

Cheng, J.-X.

Das, R.

S. Chaitanya Kumar, R. Das, G. K. Samanta, and M. Ebrahim-Zadeh, Appl. Phys. B 102, 31 (2011).
[CrossRef]

Devi, K.

G. K. Samanta, S. Chaitanya Kumar, K. Devi, and M. Ebrahim-Zadeh, Opt. Lasers Eng. 50, 215 (2012).
[CrossRef]

S. Chaitanya Kumar, G. K. Samanta, K. Devi, S. Sanguinetti, and M. Ebrahim-Zadeh, Appl. Opt. 51, 15 (2012).
[CrossRef]

Dierolf, V.

Dupriez, P.

Ebrahim-Zadeh, M.

Esteban-Martin, A.

Freudiger, C. W.

Gawith, C.

Hilinski, E. F.

E. F. Hilinski and P. M. Rentzepis, Nature 302, 481 (1983).
[CrossRef]

Holtom, G. R.

Hung, H.

Johnston, R. S.

Jones, D. J.

Kienle, F.

Kiessling, J.

Kieu, K.

Knight, J. C.

Lavoute, L.

Lin, D.

Major, H.

Potma, E. O.

Rentzepis, P. M.

E. F. Hilinski and P. M. Rentzepis, Nature 302, 481 (1983).
[CrossRef]

Richardson, D.

Saar, B. G.

Samanta, G. K.

S. Chaitanya Kumar, G. K. Samanta, K. Devi, S. Sanguinetti, and M. Ebrahim-Zadeh, Appl. Opt. 51, 15 (2012).
[CrossRef]

G. K. Samanta, S. Chaitanya Kumar, K. Devi, and M. Ebrahim-Zadeh, Opt. Lasers Eng. 50, 215 (2012).
[CrossRef]

S. Chaitanya Kumar, R. Das, G. K. Samanta, and M. Ebrahim-Zadeh, Appl. Phys. B 102, 31 (2011).
[CrossRef]

Sanguinetti, S.

Seibel, E. J.

Shepherd, D.

Sowade, R.

Wadsworth, W. J.

Wise, F. W.

Xie, X. S.

Ye, J.

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Figures (4)

Fig. 1.
Fig. 1.

Experimental setup of intracavity frequency-doubled, MgO:PPLN SPOPO. Faraday isolator, FI; λ/2, Half-wave-plate, λ/2; Polarizing beam-splitter, PBS; Mirrors, M; Output coupler, OC.

Fig. 2.
Fig. 2.

Variation of (a) signal and SHG power, (b) corresponding idler power, and pump depletion across the tuning range.

Fig. 3.
Fig. 3.

Variation of (a) SHG power, (solid line is the quadratic fit to the experimental data), Inset: Beam profile of the SHG; (b) signal and idler power as a function of pump power.

Fig. 4.
Fig. 4.

(a) Simultaneously recorded long-term power stability of SHG, signal and idler output from the SPOPO. (b) Interferometric autocorrelation of SHG pulses. Inset: corresponding SHG spectrum centered at 784 nm.

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