Heterodyne spectroscopy of astronomical and laboratory sources at 8.5 μm using diode laser local oscillators

1975 ◽  
Vol 17 (5) ◽  
pp. 661-667 ◽  
Author(s):  
M. Mumma ◽  
T. Kostiuk ◽  
S. Cohen ◽  
D. Bühl ◽  
P. C. Von Thuna
Keyword(s):  
Diode Laser ◽  
Local Oscillators ◽  
Heterodyne Spectroscopy ◽  
Laser Local Oscillators

Laser Local Oscillators for Heterodyne Receivers beyond 2 Terahertz

Frequenz ◽  
2008 ◽  
Vol 62 (5-6) ◽  
pp. 111-117 ◽  
Author(s):  
Heinz-Wilhelm Hübers ◽  
Heiko Richter ◽  
Sergey Pavlov ◽  
Alexei Semenov ◽  
Alessandro Tredicucci ◽  
...  
Keyword(s):  
Local Oscillators ◽  
Heterodyne Receivers ◽  
Laser Local Oscillators

Diode laser heterodyne spectroscopy on the ν4 and ν9 bands of 1,1-difluoroethylene

1981 ◽  
Vol 87 (2) ◽  
pp. 416-428 ◽  
Author(s):  
Walter J. Lafferty ◽  
J.P. Sattler ◽  
T.L. Worchesky ◽  
K.J. Ritter
Keyword(s):  
Diode Laser ◽  
Heterodyne Spectroscopy ◽  
Laser Heterodyne

Technique for wideband, rapid, and accurate diode-laser heterodyne spectroscopy: measurements on 1,1-difluoroethylene

1980 ◽  
Vol 5 (1) ◽  
pp. 21 ◽  
Author(s):  
J. P. Sattler ◽  
W. J. Lafferty ◽  
T. L. Worchesky ◽  
K. J. Ritter
Keyword(s):  
Diode Laser ◽  
Heterodyne Spectroscopy ◽  
Laser Heterodyne

Diode laser heterodyne spectroscopy on the ν1 band of sulfur dioxide

1981 ◽  
Vol 88 (2) ◽  
pp. 364-371 ◽  
Author(s):  
J.P. Sattler ◽  
T.L. Worchesky ◽  
Walter J. Lafferty
Keyword(s):  
Sulfur Dioxide ◽  
Diode Laser ◽  
Heterodyne Spectroscopy ◽  
Laser Heterodyne

Tunable diode-laser heterodyne spectroscopy of atmospheric oxygen

1993 ◽  
Vol 18 (19) ◽  
pp. 1675 ◽  
Author(s):  
R. J. McLean ◽  
C. E. Fairchild ◽  
P. L. Dyson ◽  
P. Hannaford
Keyword(s):  
Diode Laser ◽  
Atmospheric Oxygen ◽  
Tunable Diode Laser ◽  
Heterodyne Spectroscopy ◽  
Laser Heterodyne

Ultra-stable laser local oscillators

2012 ◽  
Author(s):  
David R. Leibrandt ◽  
Michael J. Thorpe ◽  
Chin-Wen Chou ◽  
Tara M. Fortier ◽  
Scott A. Diddams ◽  
...  
Keyword(s):  
Local Oscillators ◽  
Stable Laser ◽  
Laser Local Oscillators

scholarly journals Heterodyne Interferometry in the Infrared

1994 ◽  
Vol 158 ◽  
pp. 19-25 ◽  
Author(s):  
C.H. Townes ◽  
M. Bester ◽  
W.C. Danchi ◽  
C.G. Degiacomi ◽  
L.J. Greenhill
Keyword(s):  
Adaptive Optics ◽  
Phase Fluctuation ◽  
Wavelength Region ◽  
Heterodyne Detection ◽  
Local Oscillators ◽  
Infrared Wavelengths ◽  
The University ◽  
Atmospheric Phenomena ◽  
Long Baselines ◽  
Laser Local Oscillators

The University of California Infrared Spatial Interferometer (ISI) for the 10 μm wavelength region is briefly described along with results obtained on prominent stars and on atmospheric phenomena. The system has two movable telescopes of 1.65 m aperture. It operates in principle like a modern radio interferometer, using heterodyne detection, CO2 laser local oscillators, RF delay lines, and lobe rotation to maintain a fixed-frequency fringe rate.Rather extensive measurements have been made on atmospheric pathlength or phase fluctuation characteristics which show substantial deviations from the Kolmogorov-Taylor model, fortunately in a direction favoring adaptive optics, long baselines, and the use of infrared wavelengths. Outer scales as small as about 10 meters occur under good seeing conditions. Visibility results on 13 stars show that 6 of them have dust shells rather far from the star and give evidence for episodic emission of gas. Others of the 13 stars also vary with time, but are characterized by more continuous emission and dust formation near the stars at temperatures as high as 1300 K.

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