Abstract

A parametric study to clarify efficiency limiting mechanisms and to maximize the performance of the CH2F2 laser has led to the discovery of five new CO2 pump lines and ten new FIR laser lines. The wavelengths of the new lines fill a previous gap in the spectrum of strong cw FIR laser lines. With appropriate cavity design, measured conversion efficiencies exceed 30% of the maximum theoretical limit. Optimization of the output coupling for the strongest line at λ = 184.6 μm has doubled the maximum output power from the identical system using the λ = 118.8-μm line of CH3OH. The exceptionally high conversion efficiency (33%) occurring at the highest-available CO2 pump power indicates that the limits on scaling to higher output powers have not yet been reached. The results confirm the high-performance capability of the CH2F2 laser, the strongest cw optically pumped FIR laser reported to date.

© 1979 Optical Society of America

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References

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  1. E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978).
    [CrossRef]
  2. T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).
  3. D. T. Hodges, “A review of advances in optically pumped FIR lasers,” Infrared Phys. 18, 375–384 (1978).
    [CrossRef]
  4. D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
    [CrossRef]
  5. D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
    [CrossRef]
  6. A. Scalabrin, K. M. Evenson, “Additional cw FIR laser lines from optically pumped CH2F2,” Opt. Lett. 4, 277 (1979).
    [CrossRef] [PubMed]
  7. G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977).
    [CrossRef]
  8. K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
    [CrossRef]
  9. F. B. Foote, D. T. Hodges, “Absolute power measurements from 100 to 200 μm using common laboratory detectors,” Infrared Phys., to be published.
  10. T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978).
    [CrossRef]

1979 (2)

K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
[CrossRef]

A. Scalabrin, K. M. Evenson, “Additional cw FIR laser lines from optically pumped CH2F2,” Opt. Lett. 4, 277 (1979).
[CrossRef] [PubMed]

1978 (3)

T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978).
[CrossRef]

E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978).
[CrossRef]

D. T. Hodges, “A review of advances in optically pumped FIR lasers,” Infrared Phys. 18, 375–384 (1978).
[CrossRef]

1977 (2)

D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
[CrossRef]

G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977).
[CrossRef]

1976 (1)

D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
[CrossRef]

Busse, G.

K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
[CrossRef]

G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977).
[CrossRef]

Danielewicz, E. J.

E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978).
[CrossRef]

T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).

DeTemple, T. A.

T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978).
[CrossRef]

Evenson, K. M.

Foote, F. B.

D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
[CrossRef]

D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
[CrossRef]

T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).

F. B. Foote, D. T. Hodges, “Absolute power measurements from 100 to 200 μm using common laboratory detectors,” Infrared Phys., to be published.

Galantowicz, T. A.

T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).

Hodges, D. T.

D. T. Hodges, “A review of advances in optically pumped FIR lasers,” Infrared Phys. 18, 375–384 (1978).
[CrossRef]

D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
[CrossRef]

D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
[CrossRef]

T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).

F. B. Foote, D. T. Hodges, “Absolute power measurements from 100 to 200 μm using common laboratory detectors,” Infrared Phys., to be published.

Lawton, S. A.

T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978).
[CrossRef]

Reel, R. D.

D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
[CrossRef]

D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
[CrossRef]

Scalabrin, A.

Tacke, M.

K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
[CrossRef]

Thurmaier, R.

G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977).
[CrossRef]

Walzer, K.

K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
[CrossRef]

Weiss, C. O.

E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978).
[CrossRef]

Appl. Phys. Lett. (2)

D. T. Hodges, F. B. Foote, R. D. Reel, “Efficient high-power operation of the cw far-infrared waveguide laser,” Appl. Phys. Lett. 29, 662–664 (1976).
[CrossRef]

G. Busse, R. Thurmaier, “Use of the opto-acoustic effect to discover cw far-infrared laser lines, ” Appl. Phys. Lett. 31, 194–195 (1977).
[CrossRef]

IEEE J. Quantum Electron. (3)

T. A. DeTemple, S. A. Lawton, “The identification of candidate transitions for optically pumped far infrared lasers, methyl halides and D2O,” IEEE J. Quantum Electron. QE-14, 762–768 (1978).
[CrossRef]

D. T. Hodges, F. B. Foote, R. D. Reel, “High-power operation and scaling behavior of cw optically pumped FIR waveguide lasers,” IEEE J. Quantum Electron. QE-13, 491–494 (1977).
[CrossRef]

E. J. Danielewicz, C. O. Weiss, “New efficient cw far-infrared optically pumped CH2F2 laser,” IEEE J. Quantum Electron. QE-14, 705–707 (1978).
[CrossRef]

Infrared Phys. (2)

D. T. Hodges, “A review of advances in optically pumped FIR lasers,” Infrared Phys. 18, 375–384 (1978).
[CrossRef]

K. Walzer, M. Tacke, G. Busse, “Opto-acoustic spectra of some FIR-laser active molecules,” Infrared Phys. 19, 175–177 (1979).
[CrossRef]

Opt. Lett. (1)

Other (2)

T. A. Galantowicz, E. J. Danielewicz, F. B. Foote, D. T. Hodges, “Characteristics of non-diffusion-limited optically pumped cw lasers—experimental results for CH2F2,” in Proceedings of the International Conference on Lasers ’78, V. J. Corcoran, ed. (STS Press, McLean, Virginia, 1979).

F. B. Foote, D. T. Hodges, “Absolute power measurements from 100 to 200 μm using common laboratory detectors,” Infrared Phys., to be published.

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Figures (2)

Fig. 1
Fig. 1

Optoacoustic spectrum for CH2F2 using the 9-μm P-branch lines of the CO2 laser as the excitation source.

Fig. 2
Fig. 2

Optoacoustic spectrum for CH2F2 using the 9-μm R -branch lines of the CO2 laser as the excitation source.

Tables (1)

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Table 1 Summary of Experimental Results for the CO2-Laser-Pumped CH2F2 Laser

Equations (1)

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P FIR max ~ 1 2 ( v FIR v CO 2 ) P pump .

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