Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1998-04-17
1999-12-28
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Optical output stabilization
372 20, 372 37, 372 27, 372102, 372 38, H01S 313
Patent
active
060091118
ABSTRACT:
A robust method of stabilizing a diode laser frequency to an atomic transition is provided. The method employs Zeeman shift to generate an anti-symmetric signal about a Doppler-broadened atomic resonance, and, therefore, offers a large recapture range as well as high stability. The frequency of a 780 nm diode laser, stabilized to such a signal in Rb, drifts less than 0.5 MHz.sub.pk-pk (one part in 10.sup.9) in thirty-eight hours. This tunable frequency lock may be inexpensively constructed, requires little laser power, rarely loses lock, and may be extended to other wavelengths by using different atomic species.
REFERENCES:
patent: 3534292 (1970-10-01), Cutler
B. Cheron et al., "Laser Frequency Stabilization using Zeeman Effect", J. Phys. III, 4, 1994, pp. 401-406.
K.B. MacAdam et al., "A Narrow-Band Tunable Diode Laser System With Grating Feedback, and A Saturated Absorption Spectrometer For Cs and Rb", Am. J. Phys., 60(12), 1992, pp. 1098-1111.
C.E. Wieman et al., "Using Diode Lasers For Atomic Physics", Rev. Sci. Instrum., 62(1), 1991, pp. 1-20.
Corwin Kristan L.
Epstein Ryan J.
Hand Carter F.
Lu Zheng-Tian
Wieman Carl E.
Jr. Leon Scott
University Technology Corporation
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