Abstract

We report the design and experimental demonstration of an electro-optically Q-switched intracavity second-harmonic generator (ISHG) based on a single aperiodically poled lithium niobate (APLN) in a 1342 nm Nd:YVO4 laser. This intracavity APLN, designed using the aperiodic optical superlattice technique, can perform simultaneously as a laser Q switch and a second-harmonic generator. At 200  V Q-switching voltage and a 5 kHz switching rate, we measured a pulse energy of 5.7μJ and a peak power of 700  W at 671 nm from the constructed ISHG with a 5.2 W diode power based on 51% fundamental energy depletion.

© 2009 Optical Society of America

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1999 (1)

B. Y. Gu, B. Z. Dong, Y. Zhang, and G. Z. Yang, Appl. Phys. Lett. 75, 2175 (1999).
[CrossRef]

1995 (2)

1986 (1)

1983 (1)

S. Kirkpatrick, C. D. Gelatt, and M. P. Vecchi, Science 220, 671 (1983).
[CrossRef] [PubMed]

Bosenberg, W. R.

Byer, R. L.

Chang, C. L.

Chang, J. Y.

Chang, Y. C.

Chen, C. H.

Chen, Y. H.

Chung, T. Y.

Cordova-Plaza, A.

Digonnet, M. J. F.

Dong, B. Z.

B. Y. Gu, B. Z. Dong, Y. Zhang, and G. Z. Yang, Appl. Phys. Lett. 75, 2175 (1999).
[CrossRef]

Eckardt, R. C.

Fan, T. Y.

Fejer, M. M.

Gelatt, C. D.

S. Kirkpatrick, C. D. Gelatt, and M. P. Vecchi, Science 220, 671 (1983).
[CrossRef] [PubMed]

Gu, B. Y.

B. Y. Gu, B. Z. Dong, Y. Zhang, and G. Z. Yang, Appl. Phys. Lett. 75, 2175 (1999).
[CrossRef]

Huang, Y. C.

Kirkpatrick, S.

S. Kirkpatrick, C. D. Gelatt, and M. P. Vecchi, Science 220, 671 (1983).
[CrossRef] [PubMed]

Kobayashi, T.

Lin, C. H.

Lin, S. W.

Lin, Y. Y.

Myers, L. E.

Pierce, J. W.

Shaw, H. J.

Taira, T.

Vecchi, M. P.

S. Kirkpatrick, C. D. Gelatt, and M. P. Vecchi, Science 220, 671 (1983).
[CrossRef] [PubMed]

Yang, G. Z.

B. Y. Gu, B. Z. Dong, Y. Zhang, and G. Z. Yang, Appl. Phys. Lett. 75, 2175 (1999).
[CrossRef]

Zhang, Y.

B. Y. Gu, B. Z. Dong, Y. Zhang, and G. Z. Yang, Appl. Phys. Lett. 75, 2175 (1999).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Fourier analysis of the APLN (solid curve) and the cascaded PPLN (dashed curve) domain structures. The resolved spatial frequencies at 0.0552 and 0.0752 μ m 1 correspond to the reciprocal vectors required for the designated QPM EOA PM conversion and SH generation processes in LiNbO 3 . The inset shows the calculated SHG efficiencies of the APLN (solid curve) and PPLN (dashed curve) devices.

Fig. 2
Fig. 2

Measured (filled circles) and calculated (solid curve) (a) transmittances versus the EOA field and (b) single-pass SHG efficiencies versus the crystal temperature without the application of the EOA field from the developed APLN device pumped at 1342 nm.

Fig. 3
Fig. 3

Schematic of the EO Q-switched ISHG constructed using the fabricated APLN device in a diode-pumped 1342 nm Nd : YVO 4 laser.

Fig. 4
Fig. 4

Output performance of the EO Q-switched ISHG. (a) A typical SH laser pulse measured at the 5.2 W diode pump power. The inset shows the measured depleted fundamental laser pulse and the fitted Gaussian pulse (gray curve). (b) Measured pulse width (filled circles) and peak power (open circles) of the SH wave as a function of the diode pump power at 5 kHz Q-switching rate.

Equations (1)

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OF = | η 0 η EO ( λ i , E ) w EO η SHG ( λ i ) w SHG | ,

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