By L. Beranek
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Additional resources for Acoustical Measurements (rev.)
Such higher frequencies may have been measured by techniques not directly applicable to the (sub)mm lasers. 27]. The C0 2 laser frequencies themselves are known from previous work (see Chap. 5). The two lasers, together with the (sub)mm radiation to be measured, illuminate a point-contact diode, such as a W-Ni contact, in which the difference frequencies are generated. 7 shows the experimental arrangement. lm CH30H laser line. 27]. One complication is to establish whether the difference between the (sub)mm and the synthesized frequencies is positive or negative, which can 24 C02 LASER 1 NKNOWN LASER FREQ.
Ramachandra Rao, L. Frenkel, T. Sullivan: Appl. Phys. Lett. O. G. Small, A. Javan: Phys. Lett. M. S. M. B. Elwell: Appl. Phys. Lett. E. T. Woods: J. Phys. E: Sci. Instrum. R. J. E. D. Parker: Appl. Phys. Lett. G. S. D. M. R. Ashley: Appl. Phys. Lett. G. E. K. Murray Lloyd: Opt. Common. G. R. E. J. R. Pearce: J. Phys. D: Appl. Phys. R. M. A. S. Wells, K. J. Jimenez: IEEE J. L. Lax: "Optical Mixing of C02 Lasers in the Far-Infrared", in Nonlinear Infrared Generation, ed. -R. 29 M. Inguscio, G. M.
7], together with calculated wavenumbers and wavelengths (in vacuum). Most of the frequencies are measured values. 73 x w- 4, which is true at l5°C over this mnge of wavelengths. ) 11m band (II) Line Frcq. \[Jtlll] Line Frcq. 17 G. Busse, R. Thurmaier: Appl. Phys. Lett. 31, 194-195 (1977) Societe Anonyme de Telecommunications, France C. Freed, A. Javan: Appl. Phys. Lett. 17, 53-56 (1970) K. J. Siemsen, J. Reid: Opt. Commun. 20, 284-288 (1977) N. J. Wolga: IEEE J. C. L. Soohoo, C. Freed: IEEE J.