TY  - JOUR
ID  - SisLab2098
UR  - https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2098/
IS  - 6
A1  - Pham, Van Hoi
A1  - Bui, Huy
A1  - Pham, Thanh Son
A1  - Nguyen, The Anh
A1  - Nguyen, Thuy Van
A1  - Le, Huu Thang
A1  - Bui, Trung Ninh
A1  - Nguyen, Van Phu
A1  - Roberto, Coisson
Y1  - 2013/06//
N2  - 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
JF  - J. Opt. Soc. Am. B
VL  - 30
TI  - Control of whispering-gallery-mode spectrum from
erbium-doped silica microsphere lasers
SP  - 1586
AV  - public
EP  - 1589
ER  -