Title :
H2O: a frequency and wavelength standard from 0.5 to 5 THz (18-160 cm-1)
Author :
Matsushima, Fusakazu ; Odashima, Hitoshi ; Iwasaki, Takao ; Tsunekawa, Shozo ; Takagi, Kojiro
Author_Institution :
Dept. of Phys., Yoyama Univ., Japan
fDate :
4/1/1995 12:00:00 AM
Abstract :
Frequencies of H2O pure rotational transitions from 0.5 to 5 THz have been measured with an accuracy of 1 part in 108 using a tunable far-infrared spectrometer. Measured frequencies of more than a hundred spectral lines provide an excellent wavelength and frequency calibration standard for the far infrared
Keywords :
calibration; frequency measurement; frequency stability; infrared spectra; infrared spectrometers; measurement standards; rotational states; water; 0.5 to 5 THz; H2O; far IR; frequency calibration standard; frequency standard; measured frequencies; pure rotational transitions; spectral lines; tunable far-infrared spectrometer; wavelength standard; Diodes; Finite impulse response filter; Masers; Microwave frequencies; Nitrogen; Radiation detectors; Shape measurement; Spectroscopy; Tunable circuits and devices; Wavelength measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
