Abstract

Lowest-order, single-mode laser oscillation is reported in gain-guided index-antiguided fiber lasers having core diameters from 100 to 400μm. A model is presented explaining how to select resonator mirrors to assure single-mode operation.

© 2007 Optical Society of America

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References

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  1. A. E. Siegman, J. Opt. Soc. Am. A 20, 1617 (2003).
    [CrossRef]
  2. A. E. Siegman, Y. Chen, V. Sudesh, M. C. Richardson, M. Bass, P. Foy, W. Hawkins, and J. Ballato, Appl. Phys. Lett. 89, 251101 (2006).
    [CrossRef]
  3. Y. Chen, V. Sudesh, T. McComb, M. C. Richardson, M. Bass, and J. Ballato, J. Opt. Soc. Am. B 24, 1683 (2007).
    [CrossRef]
  4. A. E. Siegman, J. Opt. Soc. Am. B 24, 1677 (2007).
    [CrossRef]
  5. ISO 11146:1999, Lasers and laser-related equipment--Test methods for laser beam parameters--Beam widths, divergence angle and beam propagation factor (International Organization for Standardization).
  6. V. Sudesh, T. McComb, Y. Chen, M. Bass, M. Richardson, J. Ballato, and A. E. Siegman are preparing a paper to be called "Gain-guided single mode laser action in a diode-pumped 200m core index antiguided fiber," for submission to Appl. Phys. B.

2007 (2)

2006 (1)

A. E. Siegman, Y. Chen, V. Sudesh, M. C. Richardson, M. Bass, P. Foy, W. Hawkins, and J. Ballato, Appl. Phys. Lett. 89, 251101 (2006).
[CrossRef]

2003 (1)

Appl. Phys. Lett. (1)

A. E. Siegman, Y. Chen, V. Sudesh, M. C. Richardson, M. Bass, P. Foy, W. Hawkins, and J. Ballato, Appl. Phys. Lett. 89, 251101 (2006).
[CrossRef]

J. Opt. Soc. Am. A (1)

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

Other (2)

ISO 11146:1999, Lasers and laser-related equipment--Test methods for laser beam parameters--Beam widths, divergence angle and beam propagation factor (International Organization for Standardization).

V. Sudesh, T. McComb, Y. Chen, M. Bass, M. Richardson, J. Ballato, and A. E. Siegman are preparing a paper to be called "Gain-guided single mode laser action in a diode-pumped 200m core index antiguided fiber," for submission to Appl. Phys. B.

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Figures (1)

Fig. 1
Fig. 1

(a) Output pattern due to parasitic modes when no GG-IAG lasing takes place. (b) Single lowest-order mode pattern from the 200 μ m core diameter fiber at 6 × threshold. (c) Single lowest-order mode pattern from the 300 μ m core diameter fiber at 7 × threshold. (d) Single lowest-order mode pattern from the 400 μ m core diameter fiber at 10 × threshold.

Tables (1)

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Table 1 Quantities Calculated and Measured for the 100 400 μ m Core Diameter GG-IAG Fiber Lasers

Equations (9)

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Δ N = ( 2 π a λ ) 2 2 n 0 Δ n ,
G = ( 2 π a λ ) 2 ( n 0 λ 2 π ) g ,
G g g 01 = 4 j 01 4 Δ N 133.8 Δ N ,
G g g 11 = 4 j 11 4 Δ N 862.2 Δ N ,
g g g 01 = 133.8 2 n 0 3 ( Δ n ) λ 2 ( 2 π ) 2 a 3 ,
g g g 11 = 862.2 2 n 0 3 ( Δ n ) λ 2 ( 2 π ) 2 a 3 .
g t h o s c > g g g 01 .
g t h o s c = 1 2 l g ln ( R 1 R 2 ) + α ,
g t o t o s c = g t h o s c + g g g 01 < g g g 11 .

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