Abstract
The terahertz region is between the optical wave and the so-called microwaves; it had not been studied until 1963, when Nishizawa started the development of a THz wave generation based on the character of lattice or molecular vibrations. In 1979, Raman laser oscillation was realized using GaP, and in 1983, the oscillation of lattice vibration (12 THz) was achieved by mixing with the original wave. Recently, many kinds of oscillators have been developed: LiNbO3 and others for parametric oscillations, TUNNETT diode, so-called Ballistic SIT, etc. These frequencies can induce lattice or molecular vibrations, observable through reflection or transmission. Therefore, terahertz technology is useful for detection of toxins, including bacteria and viruses. It can be applied for investigation of structural changes in molecules, including those caused by disease or medical treatment. At the same time, it can heat up selectively a specified structure of a polymer and, hence, may be used for thermal treatment, or to enhance the reaction with a specific structure, suppressing side effects.
Similar content being viewed by others
References
Y. Watanabe and J. Nishizawa, Semiconductor Maser, Jpn. Patent No. 273217, April 22 (1957).
R. N. Hall, G. E. Fenner, J. E. Kingly, et al., Phys. Rev. Lett., 9, 366 (1962); M. I. Nathan, W. P. Dumke, G. Burns, et al., Appl. Phys. Lett., 1, 62 (1962); T. M. Quist, R. H. Rediker, R. J. Keyes, et al., ibid, 91.
J. Nishizawa, Denshi Kagaku, 14, 17–30 (1963).
J. Nishizawa and I. Sasaki, Jpn. Patent Appl. “Focusing fiber with some inhomogeneity in radial direction,” Nov. 12 (1964); S. Kawakami and J. Nishizawa, Proc. IEEE, 53, 2148 (1965).
J. Nishizawa, S. Shinozaki, and K. Ishida, J. Appl. Phys., 44, 1638 (1973); J. Nishizawa, Y. Okuno, and H. Tadano, J. Crystal Growth, 31, 215 (1975).
J. Nishizawa and K. Suto, J. Appl. Phys., 51, 2429 (1980); K. Suto and J. Nishizawa, IEEE J. Quant. Electr., QE-19, 1251 (1983).
J. Nishizawa and Y. Watanabe, Sci. Res. Rep. Inst. Tohoku Univ., B-(Comm.), 10, No. 2, 91 (1958).
J. Nishizawa, P. Plotka, and T. Kurabayashi, IEEE Trans. Electron Devices, 49, 1102 (2002).
K. Kawase, J. Shikata, and H. Ito, J. Phys. D: Appl. Phys., 34, R1 (2001).
T. Saito, K. Suto, T. Kimura, et al., J. Appl. Phys., 87, 3399 (2000).
T. Tanabe, K. Suto, J. Nishizawa, et al., ibid, 93, 4610 (2003).
T. Tanabe, K. Suto, J. Nishizawa, et al., J. Phys. D: Appl. Phys., 36, 985 (2003).
T. Tanabe, K. Suto, J. Nishizawa, et al., to appear in Appl. Phys. Lett.
P. Plotka, J. Nishizawa, T. Kurabayashi, and H. Makabe, IEEE Trans. Electron Devices, 50, 867 (2003).
J. Nishizawa, K. Motoya, and Y. Okuno, Proc. 4th Eur. Microwave Conf. (1979), p. 463.
J. Nishizawa, P. Plotka, and T. Kurabayashi, Proc. IEEE Circuits Devices and Systems, 146, 27 (1999).
K. Kawase, J. Shikata, H. Minamide, et al., Appl. Optics, 40, 1423 (2001).
K. Kawase, J. Shikata, K. Imai, and H. Ito, Appl. Phys. Lett., 78, 2819 (2001).
K. Imai, K. Kawase, H. Minamide, and H. Ito, Opt. Lett., 27, 2173 (2002).
Author information
Authors and Affiliations
Additional information
Original Russian Text Copyright © 2004 by J. Nishizawa and K. Suto
__________
Translated from Zhurnal Strukturnoi Khimii, Vol. 45, Supplement, pp. 9–14, 2004.
Rights and permissions
About this article
Cite this article
Nishizawa, J., Suto, K. Development of terahertz electromagnetic wave generation based on nanometer films with atomic accuracy. J Struct Chem 45 (Suppl 1), S7–S13 (2004). https://doi.org/10.1007/s10947-006-0090-5
Received:
Issue Date:
DOI: https://doi.org/10.1007/s10947-006-0090-5