In recent years, huge progress has been made in the development of rare-earth ion doped tellurite glass laser sources, ranging from watt-and multiwatt-level fiber lasers to nanowatt …
Morphing refers to the smooth transition from a specific shape into another one, in which the initial and final shapes can be significantly different. A typical illustration is to turn a cube into …
T Kishi, T Kumagai, S Shibuya, F Prudenzano… - Optics …, 2015 - opg.optica.org
A Nd^ 3+-doped tellurite-glass terrace microsphere was fabricated, and its laser characteristics using free-space pumping were investigated. A localized laser heating …
T Yano, T Kishi, T Kumagai - International Journal of Applied …, 2015 - Wiley Online Library
Preparation and application of glass spheres as resonators are discussed. Surface‐tension mold (StM) and localized‐laser heating (LLH) techniques have been developed to fabricate …
T Kumagai, G Palma, F Prudenzano… - … , and Beam Control …, 2017 - spiedigitallibrary.org
New spherical resonators with internal defects are introduced to show anomalous whispering gallery modes (WGMs). The defect induces a symmetry breaking spherical cavity …
T Kishi - Journal of the Ceramic Society of Japan, 2018 - jstage.jst.go.jp
Inorganic glass materials have been widely used for optic and photonic applications not only due to their excellent optical properties, such as a wide optical window, various refractive …
L Chang, F Timmermans, C Otto - Optics Express, 2017 - opg.optica.org
Non-traditional whispering gallery modes are studied in a glass microsphere. Geometrical ray tracing is used to explain and calculate these modes. Thermal emission and Raman …
T Kishi, T Kumagai, H Tang, S Murai… - 2020 22nd …, 2020 - ieeexplore.ieee.org
Tellurite glass microspheres having whispering gallery modes (WGMs) were fabricated on a substrate by using a localized-laser heating technique, and nano-or micro-structures were …
The fundamental properties of glass microspherical whisperinggallery mode resonators (WGMRs) and their applications to sensing, frequency conversion, and hybrid optical …