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Control of whispering-gallery-mode spectrum from erbium-doped silica microsphere lasers

Pham, Van Hoi and Bui, Huy and Pham, Thanh Son and Nguyen, The Anh and Nguyen, Thuy Van and Le, Huu Thang and Bui, Trung Ninh and Nguyen, Van Phu and Roberto, Coisson (2013) Control of whispering-gallery-mode spectrum from erbium-doped silica microsphere lasers. J. Opt. Soc. Am. B, 30 (6). pp. 1586-1589.

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High-power whispering-gallery modes (WGMs) emitted from microcavity lasers have attracted attention for many applications, such as optical signal processing, spectroscopy, optical sensors, and large-bandwidth optical com- munications. In this paper, we present a simple approach for controlling the outputWGMs of erbium-doped silica microsphere lasers. With the presented scheme, accurate adjustment of the coupling gap between the collection fiber taper and the spherical surface allows us to select different single modes of the microsphere laser or different multimode configurations (also functions of the waist diameter of taper and the Er-doped concentration). The nonlinear frequency shift of the microsphere cavity as a function of intracavity power has also been studied. The high intensity and high sidemode suppression ratio of the obtained singleWGMare suitable for spectroscopy, optical sensors, and communications. © 2013 Optical Society of America

Item Type: Article
Subjects: ISI-indexed journals
Depositing User: Bùi Trung Ninh
Date Deposited: 16 Dec 2016 10:17
Last Modified: 16 Dec 2016 10:17

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