Selective excitation of Fabry-Perot or whispering-gallery mode-type lasing in GaN microrods

2014 ◽  
Vol 105 (20) ◽  
pp. 201108 ◽  
Author(s):  
Hyeonjun Baek ◽  
Jerome K. Hyun ◽  
Kunook Chung ◽  
Hongseok Oh ◽  
Gyu-Chul Yi
Keyword(s):  
Whispering Gallery Mode ◽  
Selective Excitation ◽  
Whispering Gallery ◽  
Fabry Perot

Lasing from reduced dimensional perovskite microplatelets: Fabry-Pérot or whispering-gallery-mode?

2019 ◽  
Vol 151 (21) ◽  
pp. 211101 ◽  
Author(s):  
Qi Li ◽  
Chun Li ◽  
Qiuyu Shang ◽  
Liyun Zhao ◽  
Shuai Zhang ◽  
...  
Keyword(s):  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Fabry Perot

scholarly journals Advances in inorganic and hybrid perovskites for miniaturized lasers

Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2251-2272 ◽  
Author(s):  
Zhengzheng Liu ◽  
Sihao Huang ◽  
Juan Du ◽  
Chunwei Wang ◽  
Yuxin Leng
Keyword(s):  
Carrier Lifetime ◽  
Optical Gain ◽  
Whispering Gallery Mode ◽  
Travelling Wave ◽  
Stimulated Emission ◽  
Narrow Linewidth ◽  
Quality Factors ◽  
Whispering Gallery ◽  
Fundamental Properties ◽  
Fabry Perot

AbstractThe rapid advancement of perovskite-based optoelectronics devices has caught the world’s attention due to their outstanding properties, such as long carrier lifetime, low defect trap density, large absorption coefficient, narrow linewidth and high optical gain. Herein, the photonic lasing properties of perovskites are reviewed since the first stimulated emission of perovskites observed in 2014. The review is mainly focused on 3D structures based on their inherently active microcavities and externally passive microcavities of the perovskites. First, the fundamental properties in terms of crystal structure and optical characteristics of perovskites are reviewed. Then the perovskite lasers are classified into two sections based on the morphology features: the ability/inability to support lasing behaviors by themselves. Every section is further divided into two kinds of cavities according to the light reflection paths (Standing wave for the Fabry–Pérot cavity and travelling wave for the Whispering-Gallery-Mode cavity). The lasing performance involves fabrication methods, cavity sizes, thresholds, quality factors, pumping sources, etc. Finally, some challenges and prospects for perovskite lasers are given.

scholarly journals A Single-Ended Ultra-Thin Spherical Microbubble Based on the Improved Critical-State Pressure-Assisted Arc Discharge Method

Coatings ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 144 ◽  
Author(s):  
Wenfeng Guo ◽  
Jianxun Liu ◽  
Jinrong Liu ◽  
Gao Wang ◽  
Guanjun Wang ◽  
...  
Keyword(s):  
Critical State ◽  
Arc Discharge ◽  
Pressure Sensors ◽  
Deformation Characteristic ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Cavity Structure ◽  
Fabry Perot ◽  
Discharge Method ◽  
State Pressure

Hollow core microbubble structures are good candidates for the construction of high performance whispering gallery microresonator and Fabry-Perot (FP) interference devices. In the previous reports, most of interest was just focused on the dual-ended microbubble, but not single-ended microbubble, which could be used for tip sensing or other special areas. The thickness, symmetry and uniformity of the single-ended microbubble in previous reports were far from idealization. Thus, a new ultra-thin single-ended spherical microbubble based on the improved critical-state pressure-assisted arc discharge method was proposed and fabricated firstly in this paper, which was fabricated simply by using a commercial fusion splicer. The improvement to former paper was using weak discharge and releasing pressure gradually during the discharging process. Thus, the negative influence of gravity towards bubble deformation was decreased, and the fabricated microbubble structure had a thin, smooth and uniform surface. By changing the arc discharge parameters and the fiber position, the wall thicknesses of the fabricated microbubble could reach the level of 2 μm or less. The fiber Fabry-Perot (FP) interference technique was also used to analyze the deformation characteristic of microbubble under difference filling pressures. Finding the ends of the microbubbles had a trend of elongation with axial compression when the filling pressure was increasing. Its sensitivity to the inner pressure of microbubble samples was about ~556 nm/MPa, the bubble wall thickness was only of about 2 μm. Besides, a high whispering gallery mode (WGM) quality factor that up to 107 was realized by using this microbubble-based resonator. To explain the upper phenomenon, the microbubble was modeled and simulated with the ANSYS software. Results of this study could be useful for developing new single-ended whispering gallery mode micro-cavity structure, pressure sensors, etc.

Concrete perovskites for fabricating high-quality micro-laser arrays

2020 ◽  
Vol 8 (45) ◽  
pp. 16042-16047
Author(s):  
Haihua Zhang ◽  
Tiantian Chen ◽  
Hongbing Fu
Keyword(s):  
Whispering Gallery Mode ◽  
High Quality ◽  
Laser Arrays ◽  
Whispering Gallery ◽  
Fabry Perot

Hybrid Concrete-like perovskites (CPs) of CsPbBr3@MABr were designed to obtain high-quality whispering-gallery-mode (WGM) and Fabry–Pérot (FP) cavity arrays for lasing.

scholarly journals Splitting of resonances in a curved optical fiber-based Fabry-Perot resonator

2021 ◽  
Vol 45 (1) ◽  
pp. 38-44
Author(s):  
A.V. Dyshlyuk ◽  
U.A. Eryusheva ◽  
O.B. Vitirk
Keyword(s):  
Single Mode ◽  
Whispering Gallery Mode ◽  
Single Mode Fiber ◽  
Transmission Spectra ◽  
Practical Application ◽  
Reflection And Transmission ◽  
Whispering Gallery ◽  
The Core ◽  
Fabry Perot ◽  
Basic Parameters

In this work, the splitting of resonance lines in a Fabry-Perot resonator formed by a section of a standard curved single-mode fiber with metal-coated ends is investigated numerically and experimentally. It is shown that this splitting is similar to the Autler-Townes splitting and results from a strong coupling between the fundamental mode of the core and the whispering gallery mode of the cladding of the curved fiber. The influence of all basic parameters of the curved resonator on the splitting of its resonance lines in the reflection and transmission spectra is considered. Prospects for the practical application of the effects studied for high-resolution optical refractometry, as well as the direction of further research are outlined.

Evaluation of Effective Conductivity of Copper-Clad Dielectric Laminate Substrates in Millimeter-Wave Bands Using Whispering Gallery Mode Resonators

2009 ◽  
Vol E92-C (12) ◽  
pp. 1504-1511 ◽  
Author(s):  
Thi Huong TRAN ◽  
Yuanfeng SHE ◽  
Jiro HIROKAWA ◽  
Kimio SAKURAI ◽  
Yoshinori KOGAMI ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Effective Conductivity ◽  
Whispering Gallery Mode ◽  
Whispering Gallery
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