Abstract

Longitudinally pumped miniature lasers are inefficient, partly because of their inefficient absorption of the pump light. Scavenging the unabsorbed pump light to pump an in-line amplifier can greatly enhance the efficiency of the system, with minimal added cost, size, or complexity.

© 2004 Optical Society of America

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References

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  1. J. J. Zayhowski and C. Dill, Opt. Lett. 19, 1427 (1994).
    [CrossRef] [PubMed]
  2. J. J. Zayhowski, Laser Focus World 35(8), 129 (1999).
  3. J. J. Zayhowski, J. Alloys Compd. 303–304, 393 (2000).
    [CrossRef]
  4. J. J. Zayhowski and A. L. Wilson, IEEE J. Quantum Electron. 39, 1588 (2003).
    [CrossRef]
  5. J. J. Zayhowski, “Miniature laser/amplifier system,” U.S. patent6,512,630 (January28, 2003).
  6. M. A. Albota, R. M. Heinrichs, D. G. Kocher, D. G. Fouche, B. E. Player, M. E. O’Brien, B. F. Aull, J. J. Zayhowski, J. Mooney, B. C. Willard, and R. R. Carlson, Appl. Opt. 41, 7671 (2002).
    [CrossRef]

2003 (1)

J. J. Zayhowski and A. L. Wilson, IEEE J. Quantum Electron. 39, 1588 (2003).
[CrossRef]

2002 (1)

2000 (1)

J. J. Zayhowski, J. Alloys Compd. 303–304, 393 (2000).
[CrossRef]

1999 (1)

J. J. Zayhowski, Laser Focus World 35(8), 129 (1999).

1994 (1)

Albota, M. A.

Aull, B. F.

Carlson, R. R.

Dill, C.

Fouche, D. G.

Heinrichs, R. M.

Kocher, D. G.

Mooney, J.

O’Brien, M. E.

Player, B. E.

Willard, B. C.

Wilson, A. L.

J. J. Zayhowski and A. L. Wilson, IEEE J. Quantum Electron. 39, 1588 (2003).
[CrossRef]

Zayhowski, J. J.

J. J. Zayhowski and A. L. Wilson, IEEE J. Quantum Electron. 39, 1588 (2003).
[CrossRef]

M. A. Albota, R. M. Heinrichs, D. G. Kocher, D. G. Fouche, B. E. Player, M. E. O’Brien, B. F. Aull, J. J. Zayhowski, J. Mooney, B. C. Willard, and R. R. Carlson, Appl. Opt. 41, 7671 (2002).
[CrossRef]

J. J. Zayhowski, J. Alloys Compd. 303–304, 393 (2000).
[CrossRef]

J. J. Zayhowski, Laser Focus World 35(8), 129 (1999).

J. J. Zayhowski and C. Dill, Opt. Lett. 19, 1427 (1994).
[CrossRef] [PubMed]

J. J. Zayhowski, “Miniature laser/amplifier system,” U.S. patent6,512,630 (January28, 2003).

Appl. Opt. (1)

IEEE J. Quantum Electron. (1)

J. J. Zayhowski and A. L. Wilson, IEEE J. Quantum Electron. 39, 1588 (2003).
[CrossRef]

J. Alloys Compd. (1)

J. J. Zayhowski, J. Alloys Compd. 303–304, 393 (2000).
[CrossRef]

Laser Focus World (1)

J. J. Zayhowski, Laser Focus World 35(8), 129 (1999).

Opt. Lett. (1)

Other (1)

J. J. Zayhowski, “Miniature laser/amplifier system,” U.S. patent6,512,630 (January28, 2003).

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Figures (4)

Fig. 1
Fig. 1

Energy-scavenging amplifier: (a) illustration of the concept, (b) schematic of its current embodiment, (c) photograph of its current embodiment. (1 in.=2.54 cm).

Fig. 2
Fig. 2

Pulse energy and gain of the energy-scavenging amplifier used with laser SPMCL-3. Different pump-diode temperature settings were used for data below and above 15 kHz. The pump diodes were operated in pulsed mode with 25-W peak power.

Fig. 3
Fig. 3

Amplifier gain as a function of pump duration. Data were taken at repetition rates from 500 Hz to 14 kHz for a fixed pump-diode temperature. The line corresponds to Amplifier gain=1+Pump duration/25 µs.

Fig. 4
Fig. 4

Pulse energy of the energy-scavenging amplifier used with laser SPMCL-3 as a function of pump duration at several pulse rates. Pump duration is controlled by temperature tuning of the pump diodes (see text). Prev. Data refers to data in Figs. 2 and 3; No Amp refers to the data in Fig. 2 labeled “Without amplifier.”

Tables (1)

Tables Icon

Table 1 Characteristics of Several Microchip Laser–Energy-Scavenging Amplifier Combinations Operated at 500 Hz

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