Frequency control of DBR diode lasers at 1.08 micrometer and precision spectroscopy of helium
Authors: Prevedelli M., Cancio P., Giusfredi G., Pavone FS., Inguscio M.
Autors Affiliation: Dipartimento di Fisica, Università di Firenze
European Laboratory for Non-Linear Spectroscopy (LENS) and INFM, Sez. di Firenze
Istituto Nazionale di Ottica (INO)
Abstract: We report difference frequency measurements on the spectrum of helium by phase-locking two DBR diode lasers at 1.08 mu m. A mirror terminated extended cavity is used for narrowing the laser linewidth to few hundred kHz. Phase-locking between two narrowed lasers is then achieved up frequency differences of 40 GHz. From the investigation of the 2(3)P helium multiplet we extract a preliminary value for the 2(3)P(0) – 2(3)P(1) fine structure splitting with an accuracy of 25 kHz, corresponding to 9 parts in 10(7).
Journal/Review: OPTICS COMMUNICATIONS (PRINT)
Volume: 125 (4-6) Pages from: 231 to: 236
KeyWords: DBR laser; spectroscopy; heliumDOI: 10.1016/0030-4018(96)00053-3Citations: 43data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-09-13References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here