Abstract

The technique of cavity dumping was used to generate 8-nsec (FWHM) laser pulses from an UV preionized discharge-pumped HgBr laser emitting at 502 nm. The pulse width corresponds to the photon round trip transit time of the resonator. Optical output energies of 11.5 mJ/pulse and cavity-dumping efficiencies of 58% were obtained with a KD*P Pockels cell and thin-film multilayer-dielectric polarizer. Short-pulse blue-green laser radiation is useful for bathymetry and other underseas ranging applications.

© 1984 Optical Society of America

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References

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  1. N. G. Jerlov, Marine Optics (Elsevier, New York, 1976), p. 135.
  2. M. B. Rankin, G. D. Ferguson, Proc. Soc. Photo-Opt. Instrum. Eng. 160, 67 (1978).
  3. D. B. Northam, M. A. Guerra, M. E. Mack, I. Itzkan, C. Deradourian, Appl. Opt. 20, 968 (1981).
    [CrossRef] [PubMed]
  4. S. G. Leslie, I. Liberman, C. S. Liu, “Cavity-Dumped Mercury-Bromide Laser,” in Proceedings, International Conference on Lasers (STS Press, McLean, Va., Dec.1981).
  5. R. G. Morton, M. E. Mack, I. Itzkan, Appl. Opt. 17, 3268 (1978).
    [CrossRef] [PubMed]

1981 (1)

1978 (2)

M. B. Rankin, G. D. Ferguson, Proc. Soc. Photo-Opt. Instrum. Eng. 160, 67 (1978).

R. G. Morton, M. E. Mack, I. Itzkan, Appl. Opt. 17, 3268 (1978).
[CrossRef] [PubMed]

Deradourian, C.

Ferguson, G. D.

M. B. Rankin, G. D. Ferguson, Proc. Soc. Photo-Opt. Instrum. Eng. 160, 67 (1978).

Guerra, M. A.

Itzkan, I.

Jerlov, N. G.

N. G. Jerlov, Marine Optics (Elsevier, New York, 1976), p. 135.

Leslie, S. G.

S. G. Leslie, I. Liberman, C. S. Liu, “Cavity-Dumped Mercury-Bromide Laser,” in Proceedings, International Conference on Lasers (STS Press, McLean, Va., Dec.1981).

Liberman, I.

S. G. Leslie, I. Liberman, C. S. Liu, “Cavity-Dumped Mercury-Bromide Laser,” in Proceedings, International Conference on Lasers (STS Press, McLean, Va., Dec.1981).

Liu, C. S.

S. G. Leslie, I. Liberman, C. S. Liu, “Cavity-Dumped Mercury-Bromide Laser,” in Proceedings, International Conference on Lasers (STS Press, McLean, Va., Dec.1981).

Mack, M. E.

Morton, R. G.

Northam, D. B.

Rankin, M. B.

M. B. Rankin, G. D. Ferguson, Proc. Soc. Photo-Opt. Instrum. Eng. 160, 67 (1978).

Appl. Opt. (2)

Proc. Soc. Photo-Opt. Instrum. Eng. (1)

M. B. Rankin, G. D. Ferguson, Proc. Soc. Photo-Opt. Instrum. Eng. 160, 67 (1978).

Other (2)

S. G. Leslie, I. Liberman, C. S. Liu, “Cavity-Dumped Mercury-Bromide Laser,” in Proceedings, International Conference on Lasers (STS Press, McLean, Va., Dec.1981).

N. G. Jerlov, Marine Optics (Elsevier, New York, 1976), p. 135.

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Figures (5)

Fig. 1
Fig. 1

Schematic of the cavity-dumping apparatus showing the optical resonator configuration used.

Fig. 2
Fig. 2

Laser output pulses in the cavity-dumped and normal modes of operation: (a) cavity-dumped output; (b) normal mode output.

Fig. 3
Fig. 3

Effect of switching delay on the cavity-dumped laser pulse: (a) circulating photon flux when the Pockels cell is not energized; (b) output pulse when the Pockels cell is energized near laser threshold; (c) 10-nsec after laser threshold; (d) 30-nsec delay; (e) 60-nsec delay; (f) 70-nsec delay.

Fig. 4
Fig. 4

Relative intensity of the primary cavity-dumped pulse as a function of the Pockels cell-switching delay.

Fig. 5
Fig. 5

Cavity-dumped pulse width as a function of the optical cavity length l. The points are measured pulse widths, and the solid line is a plot of the equation 2 l/c.

Tables (1)

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Table I Measured Output Energies and Cavity-Dumped Efficiencies for Different Resonator Configurations

Equations (1)

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η = 2 l / c γ N τ N Φ D Φ N ,

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