Local characterization of rare-earth-doped single microspheres by combined microtransmission and microphotoluminescence techniques

Abstract

We present the optical characterization of single light emitting glass microspheres by means of an experimental setup that combines $\mu$-transmission and $\mu$-photoluminescence measurements without the need of optical fibers for excitation or detection purposes. We demonstrate that the results provided by both techniques are consistent among them and can provide complementary information regarding the active material properties (material losses and cross sections) and the passive resonator ones (radiative quality factors, group refractive indices, sphere radius, and pump power threshold for mode spectral shifting). This work addresses ${\mathrm{Nd}}^{3+}$ doped borate glass microspheres, but the reported studies could be realized in other rare-earth-doped glass microspheres as well.

© 2012 Optical Society of America

Microcavities combining a semiconductor with a fused-silica microsphere

Xudong Fan, Scott Lacey, and Hailin Wang
Opt. Lett. 24(11) 771-773 (1999)

Optical cavity modes of a single crystalline zinc oxide microsphere

Rakesh Singh Moirangthem, Pi-Ju Cheng, Paul Ching-Hang Chien, Buu Trong Huynh Ngo, Shu-Wei Chang, Chung-Hao Tien, and Yia-Chung Chang
Opt. Express 21(3) 3010-3020 (2013)

Coupling semiconductor nanocrystals to a fused-silica microsphere: a quantum-dot microcavity with extremely high Q factors

Xudong Fan, Phedon Palinginis, Scott Lacey, Hailin Wang, and Mark C. Lonergan
Opt. Lett. 25(21) 1600-1602 (2000)

Quasi-single mode laser output from a terrace structure added on a Nd³⁺-doped tellurite-glass microsphere prepared using localized laser heating

Tetsuo Kishi, Tsutaru Kumagai, Shogo Shibuya, Francesco Prudenzano, Tetsuji Yano, and Shuichi Shibata
Opt. Express 23(16) 20629-20635 (2015)

Percolation of light through whispering gallery modes in 3D lattices of coupled microspheres

Vasily N. Astratov and Shashanka P. Ashili
Opt. Express 15(25) 17351-17361 (2007)