Coherent light generators – Particular beam control device – Optical output stabilization
Reexamination Certificate
2007-02-13
2007-02-13
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular beam control device
Optical output stabilization
Reexamination Certificate
active
10811142
ABSTRACT:
A method for stabilizing a laser frequency using sub-Doppler spectral spectrum of atoms, and a laser frequency stabilization device used in the method which is comprised of a gas charged cell, a laser, a laser frequency adjusting means, a laser beam dividing means for dividing the laser beam into a pump beam and a probe beam, a photo detector for measuring intensity of the probe beam after passed through the cell, an ON/OFF means for cutting off the pumping beam at a constant time interval, a computing means for obtaining the intensity of the probe beam, a demodulated signal of the probe beam, the difference in intensity between the probe and pumping beam, and a difference in demodulated signal, and a feedback means which feeds back the information to the laser frequency adjusting means, thereby stabilizing the frequency of the laser.
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Fukuda Kyoya
Tachikawa Maki
Finneren Rory
Harvey Minsun Oh
National Institute of Information and Communications Technology
Westerman, Hattori, Daniels & Adrian , LLP.
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