title: Optical injection and spectral filtering of high-power ultraviolet laser diodes.
abstract: We demonstrate injection locking of high-power laser diodes operating at 397 nm. We achieve stable operation with an injection power of ∼100  μW and a slave laser output power of up to 110 mW. We investigate the spectral purity of the slave laser light via photon scattering experiments on a single trapped (40)Ca(+) ion. We show that it is possible to achieve a scattering rate indistinguishable from that of monochromatic light by filtering the laser light with a diffraction grating to remove amplified spontaneous emission.
authors.forename: V M
authors.initials: VM
authors.lastname: Schäfer
authors.forename: C J
authors.initials: CJ
authors.lastname: Ballance
authors.forename: C J
authors.initials: CJ
authors.lastname: Tock
authors.forename: D M
authors.initials: DM
authors.lastname: Lucas