scholarly journals Tunable Narrow-Linewidth Ring Laser Based on the Polarization Conversion in a Tapered Fiber-Coupled Whispering Gallery Mode Resonator

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1285
Author(s):  
Pengfa Chang ◽  
Chen Wang ◽  
Hong Han ◽  
Feng Gao ◽  
Ligang Huang ◽  
...  
Keyword(s):  
Ring Laser ◽  
Longitudinal Mode ◽  
Whispering Gallery Mode ◽  
Resonant Mode ◽  
Band Pass Filter ◽  
Polarization Conversion ◽  
Narrow Linewidth ◽  
Pass Filter ◽  
Tapered Fiber ◽  
Whispering Gallery

Based on the polarization conversion in a tapered fiber-coupled whispering gallery mode (WGM) system, a simple-structured narrow linewidth band-pass filter was fabricated and a narrow linewidth ring laser was demonstrated. With a fiber Bragg grating (FBG) to further select the resonant mode, the ring laser could be in the single-longitudinal-mode with the linewidth about 6 kHz and its wavelength could be tuned from 1540.10 nm to 1570.01 nm. Benefit from the dense modes in the WGM resonator, high conversion efficiency, and better stability of the structure, a tunable dual-wavelength laser could be achieved based on two FBGs with different resonant wavelengths. The configuration of the proposed laser is simple and stable, which will benefit its applications in the future.

Quasicritical coupling in a few-mode tapered-fiber coupled whispering-gallery-mode system

2018 ◽  
Vol 98 (5) ◽  
Author(s):  
Xiaoting Li ◽  
Pengfa Chang ◽  
Ligang Huang ◽  
Feng Gao ◽  
Wending Zhang ◽  
...  
Keyword(s):  
Whispering Gallery Mode ◽  
Tapered Fiber ◽  
Whispering Gallery

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.

Fiber ring laser for intracavity sensing using a whispering-gallery-mode resonator

2012 ◽  
Vol 37 (13) ◽  
pp. 2697 ◽  
Author(s):  
G. Nunzi Conti ◽  
S. Berneschi ◽  
A. Barucci ◽  
F. Cosi ◽  
S. Soria ◽  
...  
Keyword(s):  
Ring Laser ◽  
Whispering Gallery Mode ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Whispering Gallery ◽  
Whispering Gallery Mode Resonator ◽  
Mode Resonator

scholarly journals Deformed microcavities with very high Q-factors and directional farfield emission

2020 ◽  
Vol 238 ◽  
pp. 01006
Author(s):  
Arne Behrens ◽  
Martí Bosch ◽  
Martina Hentschel ◽  
Stefan Sinzinger
Keyword(s):  
Surface Roughness ◽  
State Of The Art ◽  
Whispering Gallery Mode ◽  
Q Factor ◽  
Tapered Fiber ◽  
High Q ◽  
Whispering Gallery ◽  
Q Factors ◽  
Very High

We report the design and optimized fabrication of deformed whispering gallery mode resonators in silica with solely ICP-RIE. This allows us to control the morphology of the resonators more freely and results in low surface roughness. The light was coupled into the resonator using a state of the art tapered fiber approach and we determined the Q-factor in the range of 105

Mode conversion in a tapered fiber via a whispering gallery mode resonator and its application as add/drop filter

2016 ◽  
Vol 41 (3) ◽  
pp. 638 ◽  
Author(s):  
Ligang Huang ◽  
Jie Wang ◽  
Weihua Peng ◽  
Wending Zhang ◽  
Fang Bo ◽  
...  
Keyword(s):  
Mode Conversion ◽  
Whispering Gallery Mode ◽  
Tapered Fiber ◽  
Whispering Gallery ◽  
Whispering Gallery Mode Resonator ◽  
Mode Resonator
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