Active Stabilization of a Diode Laser Injection Lock

Abstract

We report on a device to electronically stabilize the optical injection lock of a semiconductor diode laser. Our technique uses as discriminator the peak height of the laser's transmission signal on a scanning Fabry-Perot cavity and feeds back to the diode current, thereby maintaining maximum optical power in the injected mode. A two-component feedback algorithm provides constant optimization of the injection lock, keeping it robust to slow thermal drifts and allowing fast recovery from sudden failures such as temporary occlusion of the injection beam. We demonstrate the successful performance of our stabilization method in a diode laser setup at 399 nm used for laser cooling of Yb atoms. The device eases the requirements on passive stabilization and can benefit any diode laser injection lock application, particularly those where several such locks are employed.

5 pages, 7 figures

References in corpus (6)

• A one-dimensional liquid of fermions with tunable spin
• Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
• Advances in precision contrast interferometry with Yb Bose-Einstein condensates
• Entanglement of group-II-like atoms with fast measurement for quantum information processing
• Injection locking of a high power ultraviolet laser diode for laser cooling of ytterbium atoms
• Optical injection and spectral filtering of high-power UV laser diodes

Cited by in corpus (7)

• Demonstration of the nearly continuous operation of an ${}^{171}$Yb optical lattice clock for half a year
• Active control of a diode laser with injection locking
• Monitoring and active stabilization of laser injection locking using beam ellipticity
• Injection-locking of a fiber-pigtailed laser to an external cavity diode laser via fiber optic circulator
• Enhanced Polarization Locking in VCSELs
• Watt-class injection-locked diode laser system at 399 nm for atomic physics
• Polarization purity for active stabilization of diode laser injection lock