Mode-hopping-free scanning over 2 THz by means of quasi-synchronous tuning

Shaokai Wang*, Ye Li, Yang Zhao, Qiang Wang, Yige Lin, Baike Lin, Fei Meng, Shiying Cao, Jianping Cao, Zhanjun Fang, Erjun Zang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We report mode-hopping-free tuning (MHF) over 2 THz (6 nm) of a Littman-Metcalf-type external-cavity diode laser by means of quasi-synchronous tuning, wherein the pivot point is displaced 65 mm away from the conventional rigorous synchronous rotation center. An experimental method for judging the relative position between actual pivot location and the quasi-synchronous tuning line is developed. An adjustment structure with only one freedom of movement is enough to accurately locate the pivot point, and the precise requirement is relaxed to more than 300 μm for achieving a MHF tuning range of over 1THz in our configuration.

Original languageEnglish
Pages (from-to)381-384
Number of pages4
JournalApplied Physics B: Lasers and Optics
Volume114
Issue number3
DOIs
Publication statusPublished - Mar 2014
Externally publishedYes

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