Far‐infrared spectroscopy

SEP 01, 1970

Recent efforts to explore this previously ignored and awkward region of the electromagnetic spectrum are revealing complex and esoteric quantum phenomena.

DOI: 10.1063/1.3022333

Walter G. Rothschild

Karl D. Möller

The far infrared is that uncomfortable region of the electromagnetic spectrum falling between 50 and 1000 microns (200 to $10 {cm}^{−1}$ ) where conventional infrared methods cease to be efficient while microwave techniques cannot yet be applied in a straightforward way. Spectroscopic work in the far infrared has been hampered by the unavailability of intense broad‐band sources of radiation. Although promising developments in far‐infrared laser emission may change this picture, the most useful source of far‐infrared radiation is still the mercury arc lamp, which was originally used by Rubens in his pioneering work at the turn of the century. Infrared detectors are all seriously affected by thermal noise because they inherently respond to a wide range of frequencies.

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References

1. F. J. Low, Science 164, 501 (1969).https://doi.org/SCIEAS
2. M. J. E. Golay, Rev. Sci. Instr. 18, 347 and (1947);
and M. J. E. Golay, 20, 816 (1949).
3. F. J. Low, J. Opt. Soc. Am. 51, 1300 (1961).
4. E. H. Putley, Appl. Opt. 4, 649 (1965).https://doi.org/APOPAI
5. H. Levinstein, Appl. Opt. 4, 639 (1965).https://doi.org/APOPAI
6. Y. Yamada, A. Mitsuishi, H. Yoshinaga, J. Opt. Soc. Am. 52, 17 (1962).
7. R. Ulrich, Infrared Phys. 7, 37 and (1967);
R. Ulrich, Appl. Opt. 7, 1987 (1968).https://doi.org/APOPAI
8. S. P. Varma, K. D. Möller, Appl. Opt. (to be published).
9. K. D. Möller, W. G. Rothschild, Far‐Infrared Spectroscopy, Wiley, New York (to be published in 1970).
10. R. Ulrich, K. F. Renk, L. Genzel, IEEE, MTT‐II, 363 (1963).
11. G. A. Vanasse, H. Sakai, Progress in Optics, VI, North‐Holland, Amsterdam (1967), page 261.
12. E. Burstein, “Phonons and Phonon Interaction” in Interaction of Phonons with Photons: Infrared, Raman, and Brillouin Spectra, (T. A. Bak, ed.,) Benjamin, New York (1964), page 284
I. P. Ipatova, A. A. Maradudin, B. F. Wallis, Phys. Rev. 155, 882 (1967).https://doi.org/PHRVAO
13. D. G. Burkhard, D. M. Dennison, J. Mol. Spectry, 3, 299 (1959).
14. K. D. Möller, H. G. Andersen, J. Chem. Phys. 37, 1800 (1962)
and K. D. Möller, H. G. Andersen, 39, 17 (1963).
15. S. I. Chan, T. R. Borgers, J. W. Russel, H. L. Strauss, W. D. Gwinn, J. Chem. Phys. 44, 1103 (1966).https://doi.org/JCPSA6
16. W. G. Rothschild, J. Chem. 44, 2213 (1966)
and W. G. Rothschild, 45, 1214 (1966).
17. I. Lillien, R. A. Doughty, J. Org. Chem. 32, 4152 (1967).https://doi.org/JOCEAH
18. R. Heastie, D. H. Martin, Can. J. Phys. 40, 122 (1962).https://doi.org/CJPHAD
19. D. R. Bosomworth, H. P. Gush, Can. J. Phys. 43, 751 (1965).https://doi.org/CJPHAD
20. H. B. Levine, G. Birnbaum, Phys. Rev. 154, 86 (1967); https://doi.org/PHRVAO
D. A. McQuarrie, R. B. Bernstein, J. Chem. Phys. 49, 1958 (1968); https://doi.org/JCPSA6
V. F. Sears, Can. J. Phys. 46, 1163 (1968);
R. L. Matcha, R. K. Nesbet, Phys. Rev. 160, 72 (1967).https://doi.org/CJPHAD
21. R. G. Gordon, Adv. Magnetic Resonance 3, 1 (1968).
22. W. G. Rothschild, J. Chem. Phys. 49, 2250 (1968).https://doi.org/JCPSA6
23. P. Datta, G. M. Barrow, J. Chem. Phys. 43, 2137 (1965).https://doi.org/JCPSA6
24. D. M. Ginsberg, M. Tinkham, Phys. Rev. 118, 990 (1960).https://doi.org/PHRVAO
25. I. Giaever, K. Megerle, Phys. Rev. 122, 1101 (1961).https://doi.org/PHRVAO
26. A. S. Barker, Jr., M. Tinkham, Phys. Rev. 125, 1527 (1962).https://doi.org/PHRVAO
27. R. C. Ohlmann, M. Tinkham, Phys. Rev. 123, 425 (1961).https://doi.org/PHRVAO

More about the Authors

Walter G. Rothschild. Ford Motor Company.

Karl D. Möller. Fairleigh Dickinson University.