scholarly journals InGaAs metamorphic laser power converters with distributed Bragg reflector for wavelength range λ=1 – 1.1 µm

2020 ◽  
Author(s):  
Nikolay A. Kalyuzhnyy ◽  
Viktor M. Emelyanov ◽  
Sergey A. Mintairov ◽  
Mariia V. Nahimovich ◽  
Roman A. Salii ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Laser Power ◽  
Power Converters ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector

scholarly journals Genetic algorithm for accurate modeling of distributed Bragg reflector laser power and wavelength

2019 ◽  
Vol 58 (02) ◽  
pp. 1
Author(s):  
Wei Quan ◽  
Xinyi Li ◽  
Jiali Liu ◽  
Kesheng Shen ◽  
Yueyang Zhai
Keyword(s):  
Genetic Algorithm ◽  
Laser Power ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector

scholarly journals Fabrication of 500 nm distributed Bragg reflector using Nb2O5-MgF2 multi-layer films

2020 ◽  
pp. 2140001
Author(s):  
Yong Du ◽  
Bo-Syuan Chen ◽  
Jing-Jenn Lin ◽  
Hsien-Wei Tseng ◽  
You-Lin Wu ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Green Light ◽  
Single Layer ◽  
Bragg Reflector ◽  
Index Formula ◽  
Distributed Bragg Reflector ◽  
Central Wavelength ◽  
Bilayer Films

At first, we use an [Formula: see text] analyzer to measure the optical properties (including refractive index [Formula: see text] and extinction coefficient [Formula: see text]) of MgF2 and Nb2O5 single-layer films, in a wavelength range of 200–1700 nm for MgF2 film and in a wavelength range of 350–1500 nm for Nb2O5 film. After the refractive indexes of MgF2 and Nb2O5 single-layer films are measured, we use the measured results to calculate the needed thicknesses of the quarter-wave (1/4 wavelength) MgF2 and Nb2O5 films for the designed green-light (500 nm) distributed Bragg reflectors (DBRs). After that, an E-beam is used to deposit the MgF2-Nb2O5 bilayer films (called as one period) with different periods (two, four, and six periods are deposited in this study) on glass substrates to fabricate the DBRs with a central wavelength of 500 nm. Then we use the field emission scanning electron microscopy (FESEM) to observe the surface images of Nb2O5 films on the different periods of MgF2-Nb2O5 bilayer films. The important novelty is that we use a Focused Ion Beam (FIB) to prepare the samples for the observations of the cross-sections of MgF2-Nb2O5 bilayer films, and those results can be sued to confirm the thicknesses of the bilayer films with different periods. We also compare the reflective ratio of the fabricated DBRs at the designed central wavelength with those calculated values by using the equation investigated by Sheppard. We find that the measured reflective ratios of the fabricated DBRs meet the calculated results obtained from Sheppard’s equation.

Intrinsic losses in photovoltaic laser power converters

2021 ◽  
Vol 118 (10) ◽  
pp. 104103
Author(s):  
Minshen Lin ◽  
Wei E. I. Sha ◽  
Wenxing Zhong ◽  
Dehong Xu
Keyword(s):  
Laser Power ◽  
Power Converters

Low-voltage-tunable distributed Bragg reflector using InGaAs/GaAs quantum wells

1993 ◽  
Vol 5 (6) ◽  
pp. 695-697 ◽  
Author(s):  
O. Blum ◽  
J.E. Zucker ◽  
X. Wu ◽  
K.H. Gulden ◽  
H. Sohn ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Low Voltage ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector
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