Locking lasers with large FM noise to high-Q cavities

Lingze Duan, Kurt Gibble

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


We demonstrate that a laser can be directly locked to a cavity when the laser linewidth is much greater than the cavity linewidth. We lock an external-cavity diode laser with more than 1 MHz of added frequency noise to a 3.5 kHz wide cavity resonance. Our analog servo acquires lock even though the laser frequency sweeps through the cavity resonance in less than the cavity buildup time. Our theoretical analysis fully describes our measurements and explains why lock can be acquired.

Original languageEnglish (US)
Pages (from-to)3317-3319
Number of pages3
JournalOptics Letters
Issue number24
StatePublished - Dec 15 2005

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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