High Diffuse Reflectivity of Nanoporous GaN Distributed Bragg Reflector Formed by Electrochemical Etching

2013 ◽  
Vol 6 (7) ◽  
pp. 072201 ◽  
Author(s):  
Joonmo Park ◽  
Jin-Ho Kang ◽  
Sang-Wan Ryu
Keyword(s):  
Electrochemical Etching ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Diffuse Reflectivity

scholarly journals Preparation and novel photoluminescence properties of the self-supporting nanoporous InP thin films

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Dezhong Cao ◽  
Bo Wang ◽  
Dingze Lu ◽  
Xiaowei Zhou ◽  
Xiaohua Ma
Keyword(s):  
Electrochemical Etching ◽  
Quartz Substrate ◽  
High Light ◽  
Bragg Reflector ◽  
The Self ◽  
Light Reflection ◽  
Photoluminescence Properties ◽  
Reflection Effect ◽  
Distributed Bragg Reflector ◽  
Quantum Size

AbstractSelf-supporting nanoporous InP membranes are prepared by electrochemical etching, and are then first transferred to highly reflective (> 96%) mesoporous GaN (MP-GaN) distributed Bragg reflector (DBR) or quartz substrate. By the modulation of bandgap, the nanoporous InP samples show a strong photoluminescence (PL) peak at 541.2 nm due to the quantum size effect of the nanoporous InP structure. Compared to the nanoporous InP membrane with quartz substrate, the nanoporous membrane transferred to DBR shows a twofold enhancement in PL intensity owing to the high light reflection effect of bottom DBR.

Optically Encoded Smart Dust from DBR Porous Silicon

2006 ◽  
Vol 321-323 ◽  
pp. 53-56 ◽  
Author(s):  
Bong Ju Lee ◽  
Sung Gi Kim ◽  
Hong Lae Sohn
Keyword(s):  
Porous Silicon ◽  
Chemical Sensor ◽  
Electrochemical Etching ◽  
Silicon Film ◽  
Bragg Reflector ◽  
Organic Solution ◽  
Scanning Electron Micrograph ◽  
Distributed Bragg Reflector ◽  
Organic Vapors ◽  
Smart Dust

Distributed Bragg reflector (DBR) porous silicons exhibiting unique reflectivity were successfully obtained by an electrochemical etching of silicon wafer using square wave currents. Optically encoded smart dust which retained optical reflectivity was obtained from DBR porous silicon film in organic solution by using ultra-sono method. The size of optically encoded smart dust was measured by field emission scanning electron micrograph (FESEM) and was about 500 nm to few microns depending on the duration of sonication. Investigation for the optical characteristics of smart dust revealed that smart dust could be useful for application such as chemical sensor for detecting organic vapors.

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

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

Compact Single-Mode Distributed Bragg Reflector Fiber Laser

2000 ◽  
Vol 17 (2) ◽  
pp. 109-111 ◽  
Author(s):  
Yi-Yuan Xue ◽  
Hong-Lin An ◽  
Li-Bin Fu ◽  
Xiang-Zhi Lin ◽  
Hong-Du Liu
Keyword(s):  
Fiber Laser ◽  
Single Mode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector
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