Abstract

A new type of toric concave mirror laser resonator with a big Fresnel number is presented. The M2 factor of an output laser beam of the new resonator with a Fresnel number of 8.05 is close to that of the plane-concave stable resonator with a Fresnel number of 2.01, the volume of output mode of the new resonator is about four times of that of the plane-concave stable resonator. A 3.2kW doughnutlike laser beam with an M2 factor of 1.9 is obtained experimentally by using the new resonator on a high-power transverse flow CO2 laser, while the similar laser power with an M2 factor of 7.5 is obtained by using a plane-concave stable resonator with the same Fresnel number. Results show that a toric concave mirror laser resonator can permit operation of the laser with high power and high beam quality mode in the laser with large gain volume.

© 2009 Optical Society of America

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References

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  1. Y. Takenaka, J. Nishimae, M. Kuzumoto, and K. Yoshizawa, Appl. Opt. 34, 400 (1995).
    [CrossRef] [PubMed]
  2. Y. Takenaka, J. Nishimae, M. Tanaka, and Y. Motoki, Opt. Lett. 22, 37 (1997).
    [CrossRef] [PubMed]
  3. P. Sona, P. Muys, G. Sherman, and C. Leys, Opt. Lett. 15, 1452 (1990).
    [CrossRef] [PubMed]
  4. P. A. Belanger, R. L. Lachance, and C. Pare, Opt. Lett. 17, 739 (1992).
    [CrossRef] [PubMed]
  5. T. Cherezova, S. Chesnokov, L. Kaptsov, and A. Kudryashov, Opt. Express 3, 180 (1998).
    [CrossRef] [PubMed]
  6. M. Endo, Opt. Express 12, 1959 (2004).
    [CrossRef] [PubMed]
  7. M. Endo, Opt. Express 15, 5482 (2007).
    [CrossRef] [PubMed]
  8. M. A. Ahmed, J. Schulz, A. Voss, O. Parriaux, J.-C. Pommier, and T. Graf, Opt. Lett. 32, 1824 (2007).
    [CrossRef] [PubMed]
  9. C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
    [CrossRef]

2007 (2)

2004 (2)

M. Endo, Opt. Express 12, 1959 (2004).
[CrossRef] [PubMed]

C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
[CrossRef]

1998 (1)

1997 (1)

1995 (1)

1992 (1)

1990 (1)

Ahmed, M. A.

Belanger, P. A.

Cherezova, T.

Chesnokov, S.

Endo, M.

Graf, T.

Jiarong, L.

C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
[CrossRef]

Jin, H.

C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
[CrossRef]

Kaptsov, L.

Kudryashov, A.

Kuzumoto, M.

Lachance, R. L.

Leys, C.

Motoki, Y.

Muys, P.

Nishimae, J.

Pare, C.

Parriaux, O.

Pommier, J.-C.

Schulz, J.

Sherman, G.

Sona, P.

Takenaka, Y.

Tanaka, M.

Voss, A.

Yoshizawa, K.

Youqing, W.

C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
[CrossRef]

Yuanying, C.

C. Yuanying, W. Youqing, H. Jin, and L. Jiarong, Opt. Commun. 234, 1 (2004).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Schematic drawing of the toric concave mirror laser resonator.

Fig. 2
Fig. 2

Relative amplitude and phase distribution of dominant mode. (a) Three-dimensional relative amplitude, (b) three-dimensional relative phase.

Fig. 3
Fig. 3

Relative amplitude distribution of focus spot.

Fig. 4
Fig. 4

Laser power distribution of output beam at different propagating distance: (a) near-field distribution (window size: 30 mm × 30 mm ), (b) 1.2 m (window size: 20 mm × 20 mm ), (c) 1.4 m (window size: 20 mm × 20 mm ), (d) 1.6 m (window size: 20 mm × 20 mm ), (e) 1.8 m (window size: 10 mm × 10 mm ), (f) 2.0 m (window size: 10 mm × 10 mm ).

Fig. 5
Fig. 5

Fitting curve of calculated M 2 factor.

Fig. 6
Fig. 6

Effects of tilt angle of the output coupler on the output laser power.

Tables (1)

Tables Icon

Table 1 Calculated Beam Characteristics Parameters of the Resonators

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