Abstract

Single-longitudinal-mode operation is achieved in a twisted-mode-cavity c-cut Nd:GdVO4 laser. With a semiconductor saturable absorption mirror as an intracavity saturable absorber to launch passive Q-switching, no mode-locked spikes are observed on the temporal envelopes of the Q-switched output pulses due to the complete elimination of spatial hole burning in the gain medium to suppress longitudinal multi-modes. The maximal average output power is 1.24 W with the repetition rate of 76.3 kHz, and the single pulse energy is 16.0 µJ. The pulse width and polarization ratio of the output laser beam are measured about 150 ns and 53:1, respectively.

© 2005 Optical Society of America

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Appl. Opt. (2)

Appl. Phy. B (1)

T. Jensen, V. Ostroumov, J. Meyn, G.Huber, A. Zagumennyi, I. Shcherbakov, �??Spectroscopic characterization and laser performance of diode-laser-pumped Nd:GdVO4,�?? Appl. Phy. B 58, 373-379 (1994).
[CrossRef]

Cryst. Res. Technol. (1)

L. J. Qin, X. L. Meng, H. Y. Shen, L. Zhu, B. C. Xu, L. X. Huang, H. R. Xia, P. Zhao, and G. Zheng, �??Thermal conductivity and refractive indices of Nd:GdVO4 crystals,�?? Cryst. Res. Technol. 38, 793-797 (2003).
[CrossRef]

IEEE J. Quantum. Electron. (3)

Sanjun Zhang, E Wu, Haifeng Pan, and Heping Zeng, �??Passive mode locking in a diode-pumped Nd:GdVO4 laser with a semiconductor saturable absorber mirror,�?? IEEE J. Quantum. Electron. 40, 505-508 (2004).
[CrossRef]

R. Scheps, J. Myers, �??A single frequency Nd:YAG ring laser pumped by laser diodes,�?? IEEE J. Quantum. Electron. 26, 413-416 (1990).
[CrossRef]

D. Draegert, �??Efficient single-longitudinal-mode Nd:YAG laser,�?? IEEE J. Quantum. Electron. QE-8, 235-239 (1972).
[CrossRef]

IEEE Photon. Technol. Lett. (2)

T. Y. Fan, and J. Ochoa, �??Tunable single-frequency Yb:YAG laser with 1-W output power using twisted-mode technique,�?? IEEE Photon. Technol. Lett. 6, 1137-1138 (1995).
[CrossRef]

K. Nakagawa, Y. Shimizu, and M. Ohtsu, �??High power diode-laser-pumped twisted-mode Nd:YAG,�?? IEEE Photon. Technol. Lett. 6, 499-501 (1994).
[CrossRef]

J. Opt. Soc. Am. B (2)

Opt. Commun. (1)

Y. Louyer, F. Balembois, M.D. Plimmer, T. Badr, P. Georges, P. Juncar, and M.E. Himbert, �??Efficient cw operation of diode-pumped Nd:YLF lasers at 1312.0 and 1322.6 nm for a silver atom optical clock,�?? Opt. Commun. 217, 357-362 (2003).
[CrossRef]

Opt. Lett. (6)

Quantum Electron. (1)

P A Studenikin, A I Zagumennyi, Yu D Zavartsev, P A Popov, I A Shcherbakov, �??GdVO4 as a new medium for solid-state lasers: some optical and thermal properties of crystals doped with Cd3+, Tm3+, and Er3+ ions,�?? Quantum Electron. 25, 1162-1165 (1995).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

The setup of a twisted-mode-cavity laser passively Q-switched by a SESAM.

Fig. 2.
Fig. 2.

(a) The Q-switched pulse with mode-locked spikes. (b)The Q-switched pulse without any mode-locked spikes under SLM operation by using the TMC technique.

Fig. 3.
Fig. 3.

The output spectra of the TMC single-frequency laser. (a) The TMC laser is under continuous-wave operation. (b) The TMC laser is passively Q-switched by using a piece of SESAM. The free spectral range of the Fabry-Perot scanning interferometer is approximately 1.5 GHz.

Fig. 4.
Fig. 4.

The repetition rate and total output power of the SLM Q-switched TMC laser (free of mode-locked spikes) as a function of the pumping power. The inset shows the repetition rate as 76.3 kHz when the pumping power was 11.5 W.

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