title: Single-frequency tunable 447.3 nm laser by frequency doubling of tapered amplified diode laser at cesium D1 line.
abstract: A continuous single-frequency tunable blue laser at 447.3 nm is developed by external-cavity frequency doubling of a tapered amplifier-boosted continuous-wave diode laser at cesium (Cs) D1 line. A maximum blue power of 178 mW with 50.8% conversion efficiency is obtained. It can be continuously tuned over a range around 1.6 GHz as the diode laser frequency is scanned across the F=4→F'=3 transition of133Cs D1 line. The generated tunable and stable blue laser source has potential applications in constructing quantum light-atom interfaces in quantum networks.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jinhong
authors.initials: J
authors.lastname: Liu
authors.forename: Jinze
authors.initials: J
authors.lastname: Wu
authors.forename: Rong
authors.initials: R
authors.lastname: Ma
authors.forename: Dan
authors.initials: D
authors.lastname: Wang
authors.forename: Junxiang
authors.initials: J
authors.lastname: Zhang