Abstract

A novel method for the determination of the stimulated-emission cross section in an end-pumped solid-state laser is presented. The technique is based on the fact that increasing intracavity laser intensity stimulates faster decay of excited atoms and reduces the saturation of pump absorption. The use of this laser-induced pump saturation method is demonstrated with experimental data collected from a Cr4+:YAG laser and analyzed by use of a numerical model that calculates the change in the pump transmission as a function of the intracavity laser intensity. The predicted cross-section value of 1.1×10-19 cm2 agrees well with previously reported results.

© 2001 Optical Society of America

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References

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    [CrossRef]

1999 (1)

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

1998 (1)

A. Sennaroglu and B. Pekerten, IEEE J. Quantum Electron. 34, 1996 (1998).
[CrossRef]

1995 (1)

1985 (1)

P. F. Moulton, IEEE J. Quantum Electron. 21, 1582 (1985).
[CrossRef]

1964 (1)

D. E. McCumber, Phys. Rev. 134, A299 (1964).
[CrossRef]

Kadoi, A.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

McCumber, D. E.

D. E. McCumber, Phys. Rev. 134, A299 (1964).
[CrossRef]

Midorikawa, K.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

Moulton, P. F.

P. F. Moulton, IEEE J. Quantum Electron. 21, 1582 (1985).
[CrossRef]

Nagasaka, K.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

Nathel, H.

Pekerten, B.

A. Sennaroglu and B. Pekerten, IEEE J. Quantum Electron. 34, 1996 (1998).
[CrossRef]

Pollock, C. R.

Sennaroglu, A.

A. Sennaroglu and B. Pekerten, IEEE J. Quantum Electron. 34, 1996 (1998).
[CrossRef]

A. Sennaroglu, C. R. Pollock, and H. Nathel, J. Opt. Soc. Am. B 12, 930 (1995).
[CrossRef]

Suda, A.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

Tashiro, H.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

IEEE J. Quantum Electron. (3)

P. F. Moulton, IEEE J. Quantum Electron. 21, 1582 (1985).
[CrossRef]

A. Sennaroglu and B. Pekerten, IEEE J. Quantum Electron. 34, 1996 (1998).
[CrossRef]

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, IEEE J. Quantum Electron. 35, 1548 (1999).
[CrossRef]

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

Phys. Rev. (1)

D. E. McCumber, Phys. Rev. 134, A299 (1964).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Four-level energy diagram of the Cr4+:YAG gain medium.

Fig. 2
Fig. 2

Schematic of the experimental setup. See text for definitions.

Fig. 3
Fig. 3

Measured and calculated variation of the crystal transmission as a function of the incident pump power in the absence of an intracavity laser intensity.

Fig. 4
Fig. 4

Measured and calculated variation of the crystal transmission as a function of the intracavity laser power for Cr4+:YAG.

Tables (1)

Tables Icon

Table 1 Laser Parameters of the Cr4+:YAG Gain Medium

Equations (4)

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

dN2dt=σaλpIphcNg-σeλLIchcN2-N2τf,
ηz=4ωp2zωc2zωp2z+ωc2z2,
1IpzdIpdz=-αp01+IczηzIse1+IpzIsa+IczηzIse,
1IL±zdIL±dz=±{gTIpzηzIsa1+IpzηzIsa+IczIse-αL0}.

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