Ultraviolet single-frequency coupled optofluidic ring resonator dye laser | Zendy

Xin Tu | Zendy; Xiang Wu | Zendy; Ming Li | Zendy; Liying Liu | Zendy; Lei Xu | Zendy

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Ultraviolet single-frequency coupled optofluidic ring resonator dye laser

Author(s) -

Xin Tu,

Xiang Wu,

Ming Li,

Liying Liu,

Lei Xu

Publication year - 2012

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.019996

Subject(s) - lasing threshold , whispering gallery wave , resonator , optics , materials science , laser , ring laser , dye laser , optoelectronics , whispering gallery , ultraviolet , physics

Ultraviolet single-frequency lasing is realized in a coupled optofluidic ring resonator (COFRR) dye laser that consists of a thin-walled capillary microfluidic ring resonator and a cylindrical resonator. The whispering gallery modes (WGMs) in each resonator couple to each other and generate single-frequency laser emission. Single-frequency lasing occurs at 386.75 nm with a pump threshold of 5.9 μJ/mm. The side-mode-suppression ratio (SMSR) is about 20 dB. Moreover, the laser emits mainly in two directions, and each of them has a divergence of only 10.5°.

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