Frequency stabilization of an InGaAsP DFB laser using a molecular absorption line at 1.54308 ?m

1995 ◽  
Vol 27 (5) ◽  
pp. 441-445 ◽  
Author(s):  
K. I. Lee ◽  
S. K. Eah ◽  
W. Jhe
Keyword(s):  
Absorption Line ◽  
Frequency Stabilization ◽  
Molecular Absorption ◽  
Dfb Laser

Submegahertz frequency stabilization of a terahertz quantum cascade laser to a molecular absorption line

2010 ◽  
Vol 96 (7) ◽  
pp. 071112 ◽  
Author(s):  
H. Richter ◽  
S. G. Pavlov ◽  
A. D. Semenov ◽  
L. Mahler ◽  
A. Tredicucci ◽  
...  
Keyword(s):  
Absorption Line ◽  
Quantum Cascade Laser ◽  
Frequency Stabilization ◽  
Molecular Absorption ◽  
Quantum Cascade

scholarly journals Limits on the Variation of Physical Constants Derived from Molecular Absorption Lines

1999 ◽  
Vol 183 ◽  
pp. 167-167 ◽  
Author(s):  
T. Wiklind ◽  
F. Combes
Keyword(s):  
Absorption Line ◽  
High Redshift ◽  
Absorption Lines ◽  
Frequency Resolution ◽  
Radio Lines ◽  
Molecular Absorption ◽  
Diagnostic Application ◽  
Physical Constants ◽  
Resonance Transitions ◽  
Electronic Resonance

A potential diagnostic application of molecular rotational absorption lines at high redshift is to test the invariance of physical constants. This can be done by comparing the observed redshifted frequency of a molecular absorption line with redshifted lines from other types of transitions such as the 21cm hyperfine transition or electronic resonance transitions. In order to set stringent limits, it is necessary to achieve the greatest possible frequency resolution. This makes radio lines well suited for this purpose.

Frequency locking an HCN laser to a molecular absorption line

1971 ◽  
Vol 7 (13) ◽  
pp. 381 ◽  
Author(s):  
C.C. Bradley ◽  
D.J.E. Knight ◽  
C.R. McGee
Keyword(s):  
Absorption Line ◽  
Molecular Absorption ◽  
Frequency Locking ◽  
Hcn Laser

scholarly journals Molecular QSO Absorption Line Systems

2002 ◽  
Vol 12 ◽  
pp. 481-484 ◽  
Author(s):  
C.L. Carilli ◽  
K.M. Menten
Keyword(s):  
Absorption Line ◽  
High Redshift ◽  
Gravitational Lenses ◽  
Molecular Absorption

AbstractWe review observations of molecular absorption line systems at high redshift toward red quasars and gravitational lenses.

Sign in / Sign up

Export Citation Format

Share Document