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

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  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).
    [Crossref]
  2. Yin Xin, Wang Jiyang, and 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, and 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, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
    [Crossref]
  5. Zhengping Wang, Dawei Hu, and 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. VII. Properties of the N-Matrices,” J. Opt. Soc. Am. 38671-685 (1948).
    [Crossref]
  7. Guanghui Wei, et al., Matrix in Optics, (Weapon industry press, China, 1995) (in Chinese).
  8. A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
    [Crossref]

2005 (2)

Li Yunchu, Qingpu Wang, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
[Crossref]

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

2003 (3)

Yin Xin, Wang Jiyang, and Zhang Shaojun, “La3Ga5SiO14 single-crystal Q switch used as an electro-optic device,” Appl. Opt. 42, 7188-7190 (2003).
[Crossref]

Yin Xin, Wang Jiyang, and 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).

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

1983 (1)

A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
[Crossref]

1948 (1)

Hu, Dawei

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

Jiyang, Wang

Yin Xin, Wang Jiyang, and Zhang Shaojun, “La3Ga5SiO14 single-crystal Q switch used as an electro-optic device,” Appl. Opt. 42, 7188-7190 (2003).
[Crossref]

Yin Xin, Wang Jiyang, and 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).

Jones, R.C.

Kaminskii, A.A.

A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
[Crossref]

Khodzhabagyan, GG

A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
[Crossref]

Kong, Haikuan

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

Mill, B.V.

A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
[Crossref]

Shaojun, Zhang

Yin Xin, Wang Jiyang, and 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).

Yin Xin, Wang Jiyang, and Zhang Shaojun, “La3Ga5SiO14 single-crystal Q switch used as an electro-optic device,” Appl. Opt. 42, 7188-7190 (2003).
[Crossref]

Sun, Xun

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

Wang, Jiyang

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

Wang, Qingpu

Li Yunchu, Qingpu Wang, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
[Crossref]

Wang, Zhengping

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

Wei, Guanghui

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

Xin, Yin

Yin Xin, Wang Jiyang, and Zhang Shaojun, “La3Ga5SiO14 single-crystal Q switch used as an electro-optic device,” Appl. Opt. 42, 7188-7190 (2003).
[Crossref]

Yin Xin, Wang Jiyang, and 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).

Yunchu, Li

Li Yunchu, Qingpu Wang, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
[Crossref]

Zhang, Huaijin

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

Zhang, Xingyu

Li Yunchu, Qingpu Wang, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
[Crossref]

Acta Optica Sinica (1)

Yin Xin, Wang Jiyang, and 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. (1)

J. Cryst. Growth (1)

Haikuan Kong, Jiyang Wang, and 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. (1)

Opt. Commun. (1)

Li Yunchu, Qingpu Wang, and Xingyu Zhang, et al., “A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity,” Opt. Commun. 244333-338 (2005).
[Crossref]

Opt. Laser Technol. (1)

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

Phys. Status Solidi A (1)

A.A. Kaminskii, B.V. Mill, and GG Khodzhabagyan, et al., “Investigation of Trigonal (La1-xNdx)3Ga5SiO14 Crystals I. Growth and Optical Properties,” Phys. Status Solidi A 80, 387-397 (1983).
[Crossref]

Other (1)

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

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1.
Fig. 1.

Diagram of the Q-switching process in the pulse-off cavity: (a) the round trip of light, in which right-hand coordinate systems are adopted and RM represents the Reflection Mirror; (b) in this figure the round trip is divided into two single pass for convenience.

Fig. 2.
Fig. 2.

The output intensity vs. α and ϕL/2 obtained from Eq. (10), which is just one of the periods, and α varies from 0 to π/2, ϕL/2 from 0 toπ. The red arrow shows the selected hold-off position of the Q-switch.

Fig. 3.
Fig. 3.

Scheme of Nd:YAG laser Q-switched by LGS in the pulse-off cavity (A) rear mirror; (B) LGS; (C) Brewster window; (D) Xe-lamp; (E) Nd:YAG rod; (F) output coupler.

Fig. 4.
Fig. 4.

Pulse shape of LGS Q-switched Nd:YAG laser

Equations (11)

Equations on this page are rendered with MathJax. Learn more.

ϕ = 2 π λ ( n 2 n 1 ) = 2 π n o 3 r 11 E 1 λ .
M LGS = ( cos ( rL ) + i sin θ sin ( rL ) cos θ sin ( rL ) cos θ sin ( rL ) cos ( rL ) i sin θ sin ( rL ) ) ,
r = ( ρ 2 + ϕ 2 ) 1 2 , tan θ = ϕ ρ , ϕ = ϕ 2 ,
M LGS 0 = ( cos ( ρL ) sin ( ρL ) sin ( ρL ) cos ( ρL ) ) ,
M P ( α ) = ( cos 2 α 0.5 sin 2 α 0.5 sin 2 α sin 2 α ) ,
M RM = ( 1 0 0 1 ) .
E 1 x E 1 y = M p ( α ) × M LGS 0 × M RM × M LSG 0 × cos α sin α ,
E 1 x E 1 y = cos α sin α ,
E 2 x E 2 y = M p ( α ) × M LGS × M RM × M LSG × cos α sin α ,
I 2 = E 2 x 2 + E 2 y 2 .
V = 0.85 λ π n o 3 γ 11 ( L d ) .

Metrics