System and a method for frequency-stabilizing a diode laser
US6009111A · kind A · utility
17Cited by
1References
16Claims
0Family size
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Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1303
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.