Abstract

By theoretical calculations we search the hold-on and hold-off state of the pulse-off electro-optic (EO) Q-switch made of La3Ga5SiO14 (langasite, LGS) which exhibits both electro-optic (EO) effect and optical activity (OA), from which the proper applied voltage and orientation of LGS are determined. For the first time to our knowledge, a pulse-off EO Q-switch made of LGS is successfully designed and used in the Nd:YAG laser cavity. Q-switched pulses with energy 360 mJ and pulse width 8.3 ns are obtained, and the dynamic-static ratio is 80%.

© 2005 Optical Society of America

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References

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  1. Yin Xin, Wang Jiyang, and Zhang Shaojun, �??La3Ga5SiO14 single-crystal Q switch used as an electro-optic device,�?? Appl. Opt. 42, 7188-7190 (2003).
  2. Yin Xin, Wang Jiyang, Zhang Shaojun, �??The Study of the Electrooptic Effect of the Optical Active Crystals in the Polarized Light Interferometric Experiment,�?? Acta Optica Sinica 23, 1484-1488 (2003) (in Chinese).
  3. Haikuan Kong, Jiyang Wang, Huaijin Zhang, et al., �??Growth, properties and application as an electrooptic Q-switch of langasite crystal,�?? J. Cryst. Growth 254, 360-367 (2003).
    [CrossRef]
  4. Li Yunchu, Qingpu Wang, Xingyu Zhang, et al., �??A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,�?? Opt. Commun. 244 333-338 (2005).
    [CrossRef]
  5. Zhengping Wang, Dawei Hu, Xun Sun, et al., �??High-performance langasite (La3Ga5SiO14) electro-optic Q-switch,�?? Opt. Laser Technol. 2005, in press
  6. R.C. Jones, �??A new calculus for the treatment of optical systems. �?�Z. Properties of the N-Matrices,�?? J. Opt. Soc. Am. 38 671-685 (1948).
  7. Guanghui Wei, et al., Matrix in Optics, (Weapon industry press, China, 1995) (in Chinese).
  8. A.A. Kaminskii, B.V. Mill, G.G. Khodzhabagyan, et al., �??Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,�?? Phys. Status Solidi A 80, 387-397 (1983).

Acta Optica Sinica

Yin Xin, Wang Jiyang, Zhang Shaojun, �??The Study of the Electrooptic Effect of the Optical Active Crystals in the Polarized Light Interferometric Experiment,�?? Acta Optica Sinica 23, 1484-1488 (2003) (in Chinese).

Appl. Opt.

J. Cryst. Growth

Haikuan Kong, Jiyang Wang, Huaijin Zhang, et al., �??Growth, properties and application as an electrooptic Q-switch of langasite crystal,�?? J. Cryst. Growth 254, 360-367 (2003).
[CrossRef]

J. Opt. Soc. Am.

Opt. Commun.

Li Yunchu, Qingpu Wang, Xingyu Zhang, et al., �??A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,�?? Opt. Commun. 244 333-338 (2005).
[CrossRef]

Opt. Laser Technol.

Zhengping Wang, Dawei Hu, Xun Sun, et al., �??High-performance langasite (La3Ga5SiO14) electro-optic Q-switch,�?? Opt. Laser Technol. 2005, in press

Phys. Status Solidi A

A.A. Kaminskii, B.V. Mill, G.G. Khodzhabagyan, et al., �??Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,�?? Phys. Status Solidi A 80, 387-397 (1983).

Other

Guanghui Wei, et al., Matrix in Optics, (Weapon industry press, China, 1995) (in Chinese).

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