scholarly journals An improved design for quasi-optical mode conversion of whispering gallery mode gyrotron radiation

1992 ◽  
Vol 13 (8) ◽  
pp. 1033-1063 ◽  
Author(s):  
A. W. M�bius ◽  
J. A. Casey ◽  
K. E. Kreischer ◽  
A. Li ◽  
R. J. Temkin
Keyword(s):  
Mode Conversion ◽  
Whispering Gallery Mode ◽  
Optical Mode ◽  
Whispering Gallery ◽  
Improved Design

Boundary rounding effect in the hexagonal and oval two-dimensional optical microcavity

2021 ◽  
pp. 2150146
Author(s):  
Canran Zhang ◽  
Jun Dai
Keyword(s):  
Quality Factor ◽  
Whispering Gallery Mode ◽  
Circular Cavity ◽  
Structure Parameter ◽  
The Finite Element Method ◽  
Optical Mode ◽  
Optical Microcavity ◽  
Whispering Gallery ◽  
Mode Pattern ◽  
Simulation Results

In this paper, the boundary rounding effects of two types of non-circular GaN microcavity system are numerically simulated by the finite element method. When the rounding parameter [Formula: see text] of the hexagonal microcavity decreases, the six corners of the regular hexagon are gradually rounded, the results show that the optical mode gradually changes from the hexagonal whispering-gallery mode (WGM) to the perfect circular WGM, and the quality factor of the modes increases correspondingly. For the oval microcavity, the structure parameter [Formula: see text] increases from 0 to 1 when the oval microcavity gradually changes from a stadium cavity to a circular cavity. The simulation results show that the quality factor increases with [Formula: see text], and the optical mode changes from high-leak mode to WGM. Our results demonstrate the effect of the boundary rounding on the mode pattern and quality factor in hexagonal and oval microcavities.

Experimental study of a high efficiency quasi-optical mode converter for whispering gallery mode gyrotrons

1992 ◽  
Vol 72 (5-6) ◽  
pp. 1093-1102 ◽  
Author(s):  
M. BLANK ◽  
J. A. CASEY ◽  
K. E. KREISCHER ◽  
R. J. TEMKIN ◽  
T. PRICE
Keyword(s):  
Experimental Study ◽  
High Efficiency ◽  
Whispering Gallery Mode ◽  
Mode Converter ◽  
Optical Mode ◽  
Whispering Gallery

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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