Abstract

Intense lensless intracavity focusing in a saturable absorber Q-switched all-fiber laser resonator by use of loss arrangement and mode-field-area mismatch between the fibers is investigated for the first time. The intracavity power distribution was related to the locations and values of the cavity losses as the saturable absorption loss, the reflection loss of the output coupler, and the splicing loss between the gain fiber and the absorber fiber. With a mode-field-area mismatch and a reduced splicing loss with the gain fiber, a power density in the absorber fiber was achieved that was 11.9 times higher than that in the gain fiber.

© 2012 Optical Society of America

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B. S. Wang and E. W. Mies, Proc. SPIE 6781, 678130 (2007).
[CrossRef]

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S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

2000

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

1999

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

G. Kweon and I. Park, J. Lightwave Technol. 17, 690 (1999).
[CrossRef]

1998

1996

1995

J. J. Degnan, IEEE J. Quantum Electron. 31, 1890 (1995).
[CrossRef]

1993

K. Spariosu, R. D. Stultz, and M. Birnbaum, Appl. Phys. Lett. 62, 2763 (1993).
[CrossRef]

1979

S. Nemoto and T. Makimoto, Opt. Quantum Electron. 11, 447 (1979).
[CrossRef]

Andres, M. V.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

Barmenkov, Y. O.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

Birnbaum, M.

Y.-K. Kuo, M. Birnbaum, F. Unlu, and M.-F. Huang, Appl. Opt. 35, 2576 (1996).
[CrossRef]

K. Spariosu, R. D. Stultz, and M. Birnbaum, Appl. Phys. Lett. 62, 2763 (1993).
[CrossRef]

Bisson, S. E.

Chen, Y.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Chen, Z. J.

Degnan, J. J.

J. J. Degnan, IEEE J. Quantum Electron. 31, 1890 (1995).
[CrossRef]

Demchuk, M. I.

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

Denisov, I. A.

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

Fang, Y.-C.

Gamez, M. A. M.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

Grudinin, A. B.

Gu, J.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Huang, H.-M.

Huang, M.-F.

Kir’yanov, A. V.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

Kuleshov, N. V.

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

Kuo, Y.-K.

Kweon, G.

Lam, Y. L.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Lee, Z.-C.

Lin, S.-T.

Makimoto, T.

S. Nemoto and T. Makimoto, Opt. Quantum Electron. 11, 447 (1979).
[CrossRef]

Mies, E. W.

B. S. Wang and E. W. Mies, Proc. SPIE 6781, 678130 (2007).
[CrossRef]

Minelly, J. D.

Moore, S. W.

Nemoto, S.

S. Nemoto and T. Makimoto, Opt. Quantum Electron. 11, 447 (1979).
[CrossRef]

Park, I.

Patterson, B. D.

Porta, J.

Soh, D. B. S.

Spariosu, K.

K. Spariosu, R. D. Stultz, and M. Birnbaum, Appl. Phys. Lett. 62, 2763 (1993).
[CrossRef]

Stultz, R. D.

K. Spariosu, R. D. Stultz, and M. Birnbaum, Appl. Phys. Lett. 62, 2763 (1993).
[CrossRef]

Tam, S. C.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Tsai, T.-Y.

Tsao, H.-X.

Unlu, F.

Vicente, S. G. C.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

Wang, B. S.

B. S. Wang and E. W. Mies, Proc. SPIE 6781, 678130 (2007).
[CrossRef]

Xie, W.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Yumashev, K. V.

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

Zhou, F.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Appl. Opt.

Appl. Phys. Lett.

I. A. Denisov, M. I. Demchuk, N. V. Kuleshov, and K. V. Yumashev, Appl. Phys. Lett. 77, 2455 (2000).
[CrossRef]

K. Spariosu, R. D. Stultz, and M. Birnbaum, Appl. Phys. Lett. 62, 2763 (1993).
[CrossRef]

IEEE J. Quantum Electron.

J. J. Degnan, IEEE J. Quantum Electron. 31, 1890 (1995).
[CrossRef]

J. Lightwave Technol.

Opt. Eng.

J. Gu, F. Zhou, S. C. Tam, W. Xie, Y. L. Lam, and Y. Chen, Opt. Eng. 38, 1785 (1999).
[CrossRef]

Opt. Express

Opt. Lett.

Opt. Quantum Electron.

S. Nemoto and T. Makimoto, Opt. Quantum Electron. 11, 447 (1979).
[CrossRef]

Proc. SPIE

B. S. Wang and E. W. Mies, Proc. SPIE 6781, 678130 (2007).
[CrossRef]

Quantum Electron.

S. G. C. Vicente, M. A. M. Gamez, A. V. Kir’yanov, Y. O. Barmenkov, and M. V. Andres, Quantum Electron. 34, 310 (2004).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Intracavity focusing in the saturable absorber Q-switched all-fiber lasers of type 1 and 2 with the different allocations of cavity losses.

Fig. 2.
Fig. 2.

(a) The ratio of Pav,SA to Pav,G versus the cavity losses, Lspl, Lsa, and LR2. Pav,SA and Pav,G were the average resonant powers in the gain fiber and the SAQS fiber for the lasers of type 1 and (b) type 2.

Fig. 3.
Fig. 3.

The cascading splicing loss, Lspl, versus the MFA ratio of the gain fiber to the SAQS fiber in dB. For a one-trip traveling wave from the gain fiber to the SAQS, the power density was increased by the magnification factor, M.

Fig. 4.
Fig. 4.

(a) The power density ratio rpd between the SAQS fiber and the gain fiber versus the MFA ratio in dB, with various Lsa and n-cascading splicing for the laser scheme of type 1 and (b) type 2.

Equations (5)

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

Pav,G=lgP(z)Ndg(z)Ac·dzlgNdg(z)Ac·dz,whereP(z)=P+(z)+P(z).
g(z)=10ln10(Γ·σe0zNdg(z)dz).
Pav,G=Po10ln(10)G(10G1010G10),
Pav,SA=Po10ln(10)Lsa(10LsaLR21010LR210+10LR21010Lsa+LR210).
Lspl=10log10(4rA1/n+rA1/n+2)n.

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