Abstract

A new, very wide spectral range, fast scanning spectrometer that combines high speed with good resolving power has been developed. The instrument operates with an f number in the vertical and horizontal plane of f/3 and f/17, respectively, and with a useful slit height of 3 cm. The theoretical resolving power in first order is 14,000 using an 1180-lines/mm grating. The optical layout is basically an asymmetrical Czerny-Turner arrangement with the grating at the center of curvature. The scanning element is a six sided, air turbine driven mirror that allows the whole spectrum from zero to 1.2 μ in first order to be scanned in about 70 μsec at mirror speeds of 1500 rps. The wide variation in the spectral response of the instrument presents recording problems, but ways of circumventing or diminishing those problems are suggested. A high intensity, end-on, pulsed flash tube has been used as a source for absorption spectroscopy. Some experiments are described, where the system has been applied to emission or absorption measurements.

© 1968 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. C. H. Church, L. Gampel, Appl. Opt. 5, 241 (1964).
    [CrossRef]
  2. R. A. Hill, R. D. Fellerhoff, Appl. Opt. 5, 1105 (1966).
    [CrossRef] [PubMed]
  3. I. Liberman, C. H. Church, J. A. Asars, Appl. Opt. 6, 279 (1967).
    [CrossRef] [PubMed]
  4. M. Czerny, A. F. Turner, Z. Physik 61, 792 (1930).
    [CrossRef]
  5. See, e.g., Warren T. Smith, Modern Optical Engineering (McGraw-Hill Book Company, Inc., New York, 1966), pp. 385 and 393.
  6. “High Speed Plane Grating Spectrograph and Monchromator,” W. G. Fastie, U. S. Patent No. 3,011,391 (1961).
  7. H. Zirin, The Solar Atmosphere (Blaisdell Publishing Company, Waltham, Mass., 1966, p. 42.
  8. C. H. Church, I. Liberman, Appl. Opt. 6,(1967).
    [CrossRef] [PubMed]

1967

1966

1964

1930

M. Czerny, A. F. Turner, Z. Physik 61, 792 (1930).
[CrossRef]

Asars, J. A.

Church, C. H.

Czerny, M.

M. Czerny, A. F. Turner, Z. Physik 61, 792 (1930).
[CrossRef]

Fastie, W. G.

“High Speed Plane Grating Spectrograph and Monchromator,” W. G. Fastie, U. S. Patent No. 3,011,391 (1961).

Fellerhoff, R. D.

Gampel, L.

Hill, R. A.

Liberman, I.

Smith, Warren T.

See, e.g., Warren T. Smith, Modern Optical Engineering (McGraw-Hill Book Company, Inc., New York, 1966), pp. 385 and 393.

Turner, A. F.

M. Czerny, A. F. Turner, Z. Physik 61, 792 (1930).
[CrossRef]

Zirin, H.

H. Zirin, The Solar Atmosphere (Blaisdell Publishing Company, Waltham, Mass., 1966, p. 42.

Appl. Opt.

Z. Physik

M. Czerny, A. F. Turner, Z. Physik 61, 792 (1930).
[CrossRef]

Other

See, e.g., Warren T. Smith, Modern Optical Engineering (McGraw-Hill Book Company, Inc., New York, 1966), pp. 385 and 393.

“High Speed Plane Grating Spectrograph and Monchromator,” W. G. Fastie, U. S. Patent No. 3,011,391 (1961).

H. Zirin, The Solar Atmosphere (Blaisdell Publishing Company, Waltham, Mass., 1966, p. 42.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1
Fig. 1

Optical path through wide range, scanning spectrometer.

Fig. 2
Fig. 2

Optical and electrical arrangement for absorption measurements.

Fig. 3
Fig. 3

Emission from 12-mm i.d. Xe flashtube. Upper traces: current, 1 kA/division; detector sign, 0.2 V/division; sweep, 100 μsec/cm. Lower trace: Hg short arc and Xe spectrum; 0.1 V/cm; sweep, 50 μsec/cm.

Fig. 4
Fig. 4

12-mm i.d. xenon flashtube emission in red and ir. (a) viewed side-on; (b) viewed end-on. Upper trace: current, 2 kA/division; spectrum, 1 V/division; sweep, 200 μsec/division. Lower trace: detector signal, (S–1 PM), 0.2 V/division; (3b:0.5 V/division); sweep, 10 μsec/division.

Fig. 5
Fig. 5

12-mm i.d. flashtube emission at increasing power levels. (a) 150-Torr Xe gas fillant; (b) 150-Torr Kr gas fillant. Upper trace: current 2 kA/division; spectrum, 1 V/division; sweep, 200 μsec/division. Lower trace: detector signal (SGD–100), 0.1 V/division; sweep, 20 μsec/division.

Fig. 6
Fig. 6

12-mm i.d. flashtube emission at increasing power levels. (a) 150-Torr Xe gas fillant; (b) 150-Torr Kr gas fillant. Upper trace: current, 2 kA/division; spectrum, 1 V/division; sweep, 200 μsec/division. Lower trace: detector signal (SGD–100), 1 V/division; sweep, 20 μsec/division.

Fig. 7
Fig. 7

Transmission through optically pumped ruby [4 in. (10.1 cm) × ½ in. (1.2 cm) diam.] (a) Pumped (1200 J); (b) unpumped; (c) fluorescence (1000 J). Detector, RCA 70117 PM (S20). Upper trace: current, 5 kA/division (pump pulse and source); detector voltage, 0.5 V/division; sweep, 200 μsec/division. Lower trace: spectrum, 50 mV/division; sweep, 20 μsec/division [(a) and (b)], 5 μsec/division (c).

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

m λ = d ( sin α + sin β ) ,
Δ λ = d ( sin α 1 - sin α 2 ) .
d λ / d t = d cos α ( d α / d t ) = 2 d ω cos α ,

Metrics