title: Optical injection unlocking for cavity ringdown spectroscopy.
abstract: Continuous wave cavity ringdown spectroscopy requires a rapid termination of the injection of light into the cavity to initiate the decay (i.e., ringdown) event. We demonstrate a technique that accomplishes this through pulsed optical injection of a second laser into the main laser, resulting in 20-100 MHz frequency shifts in the otherwise cavity-locked main laser sufficient to create ringdown events at 3.5 kHz. Data on the frequency shift as a function of both main laser current and relative wavelength are presented, as well as a demonstration that single exponential decays are maintained in the process.
authors.forename: Greg
authors.initials: G
authors.lastname: Bostrom
authors.forename: Andrew
authors.initials: A
authors.lastname: Rice
authors.forename: Dean
authors.initials: D
authors.lastname: Atkinson