Open AccessLong‐term atomic resonator‐based stabilisation system of ultrafast laser with small physics package
Author(s) -
Wu Jiutao,
Hou Dong,
Wang Zhong,
Zhao Jianye
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.3066
Subject(s) - laser , resonator , instability , rubidium , optics , population , laser power scaling , physics , atomic clock , ultrashort pulse , mode locking , materials science , optoelectronics , atomic physics , demography , potassium , sociology , mechanics , metallurgy
A long‐term miniaturised stabilisation scheme for a mode‐locked laser based on a rubidium coherent population trapping atomic resonator is demonstrated. By directly locking the repetition rate of a mode‐locked laser to the 85 Rb 3.035 GHz coherent population trapping resonance, a miniaturised stabilisation system for the mode‐locked laser is achieved. The stabilised laser shows a frequency instability of 5 × 10 −11 (1 s) and a long‐term instability of ∼3 × 10 −12 . This scheme avoids the extra stability loss in the electronic connection between the mode‐locked laser and the frequency reference. The whole stabilisation system occupies only a physics package of 5 × 5 × 2.2 cm, which provides a compact and portable approach for mode‐locked laser repetition rate stabilisation.