Abstract

A laser absorption spectrometer for long path measurements of ambient carbon monoxide using second derivative techniques is described. First derivative techniques are used for automatic frequency stabilization of the diode laser. The linearity of system response for large laser frequency modulation was investigated experimentally and theoretically.

© 1981 Optical Society of America

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References

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  1. L. W. Chaney, D. G. Rickel, G. M. Russwurm, W. A. McClenny, Appl. Opt. 18, 3004 (1979).
    [CrossRef] [PubMed]
  2. J. Reid, J. Shewchun, B. K. Garside, E. A. Ballik, Appl. Opt. 17, 300 (1978).
    [CrossRef] [PubMed]
  3. R. S. Eng, A. W. Mantz, T. R. Todd, Appl. Opt. 18, 3438 (1979).
    [CrossRef] [PubMed]
  4. C. N. Harward, J. M. Hoell, Appl. Opt. 18, 3978 (1979).
    [CrossRef] [PubMed]
  5. J. Reid, B. K. Garside, J. Shewchun, Opt. Quantum Electron 11, 385 (1979).
    [CrossRef]
  6. E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
    [CrossRef] [PubMed]
  7. E. Max, S. T. Eng, Opt. Quantum Electron. 11, 97 (1979).
    [CrossRef]
  8. E. D. Hinkley, Ed., Laser Monitoring of the Atmosphere (Springer, Berlin, 1976) p. 238.
  9. W. A. Clenny, G. M. Russwurm, Atmos. Environ. 12, 1443 (1978).
    [CrossRef]
  10. R. T. Ku, E. D. Hinkley, Long-Path Monitoring of Atmospheric Carbon Monoxide, Interim Technical Report, MIT Lincoln Laboratory (April1976).

1979 (5)

1978 (2)

1976 (1)

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

Ballik, E. A.

Butler, J. F.

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

Chaney, L. W.

Clenny, W. A.

W. A. Clenny, G. M. Russwurm, Atmos. Environ. 12, 1443 (1978).
[CrossRef]

Eng, R. S.

Eng, S. T.

E. Max, S. T. Eng, Opt. Quantum Electron. 11, 97 (1979).
[CrossRef]

Garside, B. K.

J. Reid, B. K. Garside, J. Shewchun, Opt. Quantum Electron 11, 385 (1979).
[CrossRef]

J. Reid, J. Shewchun, B. K. Garside, E. A. Ballik, Appl. Opt. 17, 300 (1978).
[CrossRef] [PubMed]

Harward, C. N.

Hinkley, E. D.

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

R. T. Ku, E. D. Hinkley, Long-Path Monitoring of Atmospheric Carbon Monoxide, Interim Technical Report, MIT Lincoln Laboratory (April1976).

Hoell, J. M.

Ku, R. T.

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

R. T. Ku, E. D. Hinkley, Long-Path Monitoring of Atmospheric Carbon Monoxide, Interim Technical Report, MIT Lincoln Laboratory (April1976).

Mantz, A. W.

Max, E.

E. Max, S. T. Eng, Opt. Quantum Electron. 11, 97 (1979).
[CrossRef]

McClenny, W. A.

Nill, K. W.

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

Reid, J.

J. Reid, B. K. Garside, J. Shewchun, Opt. Quantum Electron 11, 385 (1979).
[CrossRef]

J. Reid, J. Shewchun, B. K. Garside, E. A. Ballik, Appl. Opt. 17, 300 (1978).
[CrossRef] [PubMed]

Rickel, D. G.

Russwurm, G. M.

Shewchun, J.

J. Reid, B. K. Garside, J. Shewchun, Opt. Quantum Electron 11, 385 (1979).
[CrossRef]

J. Reid, J. Shewchun, B. K. Garside, E. A. Ballik, Appl. Opt. 17, 300 (1978).
[CrossRef] [PubMed]

Todd, T. R.

Appl. Opt (1)

E. D. Hinkley, R. T. Ku, K. W. Nill, J. F. Butler, Appl. Opt 15, 1653 (1976).
[CrossRef] [PubMed]

Appl. Opt. (4)

Atmos. Environ. (1)

W. A. Clenny, G. M. Russwurm, Atmos. Environ. 12, 1443 (1978).
[CrossRef]

Opt. Quantum Electron (1)

J. Reid, B. K. Garside, J. Shewchun, Opt. Quantum Electron 11, 385 (1979).
[CrossRef]

Opt. Quantum Electron. (1)

E. Max, S. T. Eng, Opt. Quantum Electron. 11, 97 (1979).
[CrossRef]

Other (2)

E. D. Hinkley, Ed., Laser Monitoring of the Atmosphere (Springer, Berlin, 1976) p. 238.

R. T. Ku, E. D. Hinkley, Long-Path Monitoring of Atmospheric Carbon Monoxide, Interim Technical Report, MIT Lincoln Laboratory (April1976).

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Figures (5)

Fig. 1
Fig. 1

Approximation of the function U 2 f / U ¯ vs α0pL.

Fig. 2
Fig. 2

Schematic representation of the apparatus.

Fig. 3
Fig. 3

Performance of the 1f frequency stabilization loop.

Fig. 4
Fig. 4

Calibration at the P(3) line. Carbon monoxide partial pressure is 0.5, 1.0, and 3.0 Torr. Total pressure in the cells is 760 Torr.

Fig. 5
Fig. 5

Laser long path monitoring of ambient carbon monoxide.

Equations (1)

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U ( t ) exp { α 0 p L / [ 1 + ( ν ν 0 ) 2 / γ 2 ] } , ν = ν 0 + k γ sin 2 π f t .

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