title: Third-harmonic-generation of a diode laser for quantum control of beryllium ions.
abstract: We generate coherent ultraviolet radiation at 313 nm as the third harmonic of an external-cavity diode laser. We use this radiation for laser cooling of trapped beryllium atomic ions and sympathetic cooling of co-trapped beryllium-hydride molecular ions. An LBO crystal in an enhancement cavity generates the second harmonic, and a BBO crystal in a doubly resonant enhancement cavity mixes this second harmonic with the fundamental to produce the third harmonic. Each enhancement cavity is preceded by a tapered amplifier to increase the fundamental light. The 36-mW output power of this all-semiconductor-gain system will enable quantum control of the beryllium ions' motion.
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Carollo
authors.forename: David A
authors.initials: DA
authors.lastname: Lane
authors.forename: Edward K
authors.initials: EK
authors.lastname: Kleiner
authors.forename: Phyo Aung
authors.initials: PA
authors.lastname: Kyaw
authors.forename: Chu C
authors.initials: CC
authors.lastname: Teng
authors.forename: Celia Y
authors.initials: CY
authors.lastname: Ou
authors.forename: Shenglan
authors.initials: S
authors.lastname: Qiao
authors.forename: David
authors.initials: D
authors.lastname: Hanneke