Abstract

We report the generation of gain-switched pulses near 1.06 μm from a Nd+3-doped single-mode fiber pumped at 590 nm. For a 5-cm-long fiber, pulses of 100 nsec at a 1-MHz repetition rate were obtained. For a 1-cm-long fiber, the pulse shortened to 40 nsec at repetition rates of up to 2.5 MHz for a single, independently drivable relaxation oscillation.

© 1989 Optical Society of America

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References

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  1. J. Stone, C. A. Burrus, Appl. Phys. Lett. 23, 388 (1973).
    [CrossRef]
  2. I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
    [CrossRef]
  3. I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
    [CrossRef]
  4. E. Snitzer, J. Opt. Soc. Am. 51, 491 (1961).
    [CrossRef]
  5. A. Owyong, G. R. Hadley, P. Esherick, R. L. Schmitt, L. A. Rahn, Opt. Lett. 10, 484 (1985).
    [CrossRef]
  6. W. Lauterborn, R. Steinhoff, J. Opt. Soc. Am. B 5, 1097 (1988).
    [CrossRef]
  7. R. Dunsmuir, J. Electon. Control 10, 453 (1961).
  8. A. Yariv, Optical Electronics, 3rd ed. (Holt, Rinehart & Winston, New York, 1985), Chap. 6.

1988 (1)

1986 (2)

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

1985 (1)

1973 (1)

J. Stone, C. A. Burrus, Appl. Phys. Lett. 23, 388 (1973).
[CrossRef]

1961 (2)

E. Snitzer, J. Opt. Soc. Am. 51, 491 (1961).
[CrossRef]

R. Dunsmuir, J. Electon. Control 10, 453 (1961).

Alcock, I. P.

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

Burrus, C. A.

J. Stone, C. A. Burrus, Appl. Phys. Lett. 23, 388 (1973).
[CrossRef]

Dunsmuir, R.

R. Dunsmuir, J. Electon. Control 10, 453 (1961).

Esherick, P.

Ferguson, A. I.

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

Hadley, G. R.

Hanna, D. C.

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

Lauterborn, W.

Owyong, A.

Rahn, L. A.

Schmitt, R. L.

Snitzer, E.

Steinhoff, R.

Stone, J.

J. Stone, C. A. Burrus, Appl. Phys. Lett. 23, 388 (1973).
[CrossRef]

Tropper, A. C.

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

Yariv, A.

A. Yariv, Optical Electronics, 3rd ed. (Holt, Rinehart & Winston, New York, 1985), Chap. 6.

Appl. Phys. Lett. (1)

J. Stone, C. A. Burrus, Appl. Phys. Lett. 23, 388 (1973).
[CrossRef]

Electron. Lett. (2)

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 268 (1986).
[CrossRef]

I. P. Alcock, A. C. Tropper, A. I. Ferguson, D. C. Hanna, Electron. Lett. 22, 84 (1986).
[CrossRef]

J. Electon. Control (1)

R. Dunsmuir, J. Electon. Control 10, 453 (1961).

J. Opt. Soc. Am. (1)

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

Opt. Lett. (1)

Other (1)

A. Yariv, Optical Electronics, 3rd ed. (Holt, Rinehart & Winston, New York, 1985), Chap. 6.

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Figures (5)

Fig. 1
Fig. 1

Diagram of the experimental setup. AOM, acousto-optic modulator.

Fig. 2
Fig. 2

Output limit cycles from a 7-m-long fiber laser (lower traces) observed under sinusoidal pump modulation (upper traces) for three slightly different depths of modulation and driving frequencies: (a) fundamental period-one oscillation 10 μsec/division, (b) period-one torsion-number-two oscillation 5 μsec/division, (c) period-two oscillation 5 μsec/ division. The upper curves for the pump have increasing intensity downward.

Fig. 3
Fig. 3

Pulsed on–off pump modulation of a fiber laser at 1 MHz. (a) Pump sequence 1111… (lower trace) and corresponding laser output (upper trace), (b) Pump sequence 110110… (lower trace) and corresponding laser output (upper trace). The time scale is 500 nsec/division.

Fig. 4
Fig. 4

(a) Pump and output for a 1-cm-long fiber with modulation at 2.5 MHz (500 nsec/division). (b) A single 40-nsec-wide output pulse (100 nsec/division).

Fig. 5
Fig. 5

Measurements of pulse duration t0 versus the pulse repetition rate TR for optimum gain switching in fiber laser cavity lengths of 7 m (crosses), 5 cm (squares), and 1 cm (circles).

Equations (6)

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T R 2 π [ T c T m ( r 1 ) 1 ] 1 / 2 ,
T R = 2 π [ ( n L / c ) ( A / σ ) ( h ν p / P ) ] 1 / 2 .
H / t 0 = [ ( H / 2 ) 2 T p P σ / h ν p A ] / ( 2 n L / c )
t 0 = 2 T p h ν p A P σ n L c .
t 0 = T R 2 / ( 2 π 2 T p ) ,
t 0 = T R / π 2 .

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