scholarly journals High-optical-quality non-cubic Yb3+-doped Ca10(PO4)6F2 (Yb:FAP) laser ceramics

2021 ◽  
Author(s):  
Hiroaki Furuse ◽  
Taiga Okabe ◽  
Homare Shirato ◽  
Daichi Kato ◽  
Naohiro Horiuchi ◽  
...  
Keyword(s):  
Optical Quality ◽  
High Optical Quality ◽  
Laser Ceramics

scholarly journals A Nanoscale Photonic Crystal Cavity Optomechanical System for Ultrasensitive Motion Sensing

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 462
Author(s):  
Ji Xia ◽  
Fuyin Wang ◽  
Chunyan Cao ◽  
Zhengliang Hu ◽  
Heng Yang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Optical Quality ◽  
Optical Force ◽  
Mechanical Oscillator ◽  
Maximum Displacement ◽  
Optomechanical System ◽  
High Optical Quality ◽  
Hybrid Platform ◽  
Optomechanical Coupling

Optomechanical nanocavities open a new hybrid platform such that the interaction between an optical cavity and mechanical oscillator can be achieved on a nanophotonic scale. Owing to attractive advantages such as ultrasmall mass, high optical quality, small mode volume and flexible mechanics, a pair of coupled photonic crystal nanobeam (PCN) cavities are utilized in this paper to establish an optomechanical nanosystem, thus enabling strong optomechanical coupling effects. In coupled PCN cavities, one nanobeam with a mass meff~3 pg works as an in-plane movable mechanical oscillator at a fundamental frequency of . The other nanobeam couples light to excite optical fundamental supermodes at and 1554.464 nm with a larger than 4 × 104. Because of the optomechanical backaction arising from an optical force, abundant optomechanical phenomena in the unresolved sideband are observed in the movable nanobeam. Moreover, benefiting from the in-plane movement of the flexible nanobeam, we achieved a maximum displacement of the movable nanobeam as 1468 . These characteristics indicate that this optomechanical nanocavity is capable of ultrasensitive motion measurements.

High optical quality GaN nanopillar arrays

2005 ◽  
Vol 86 (7) ◽  
pp. 071917 ◽  
Author(s):  
Y. D. Wang ◽  
S. J. Chua ◽  
S. Tripathy ◽  
M. S. Sander ◽  
P. Chen ◽  
...  
Keyword(s):  
Optical Quality ◽  
High Optical Quality ◽  
Nanopillar Arrays

Fabrication of ALF3-Based Glass Fibers

1989 ◽  
Vol 172 ◽  
Author(s):  
Mahmoud R. Shahriari ◽  
Tariq Iqbal ◽  
Paul R. Foy ◽  
Steve J. Saggese ◽  
G. H. Sigel
Keyword(s):  
Thermal Properties ◽  
Laser Power ◽  
Short Range ◽  
Glass Fibers ◽  
Optical Quality ◽  
Chemical Durability ◽  
Power Delivery ◽  
Mechanical And Thermal Properties ◽  
High Optical Quality ◽  
Remote Spectroscopy

AbstractSeveral glass systems based on AIF3 have been synthesized and fabricated into preforms by controlled melting and rotational casting. High optical quality preforms have been drawn into fibers using a specially modified drawing facility. The drawing tower is enclosed with a vertical glove box in which the levels of both moisture and oxygen are kept below 1 ppm during the drawing. The AIF3 -based fibers have shown dramatically superior chemical durability relative to the ZrF4 -based glass fibers. Selected optical, mechanical and thermal properties of these fibers will be presented. AIF3 -based glass fibers offer interesting opportunities for short range applications in the 2–4 micron region of the infrared such as sensing, remote spectroscopy and laser power delivery.

Catalyst-free growth of high-optical quality GaN nanowires by metal-organic vapor phase epitaxy

2011 ◽  
Vol 99 (25) ◽  
pp. 251910 ◽  
Author(s):  
X. J. Chen ◽  
B. Gayral ◽  
D. Sam-Giao ◽  
C. Bougerol ◽  
C. Durand ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Optical Quality ◽  
Vapor Phase Epitaxy ◽  
High Optical Quality ◽  
Organic Vapor ◽  
Gan Nanowires ◽  
Catalyst Free ◽  
Metal Organic ◽  
Free Growth

MOVPE growth of high optical quality InGaPN layers on GaAs (001) substrates

2010 ◽  
Vol 7 (7-8) ◽  
pp. 2079-2081 ◽  
Author(s):  
Dares Kaewket ◽  
Sakuntam Sanorpim ◽  
Sukkaneste Tungasmita ◽  
Ryuji Katayama ◽  
Kentaro Onabe
Keyword(s):  
Optical Quality ◽  
High Optical Quality ◽  
Movpe Growth

scholarly journals Heteroepitaxial Growth of High Optical Quality, Wafer-Scale van der Waals Heterostrucutres

2021 ◽  
Author(s):  
Katarzyna Ludwiczak ◽  
Aleksandra Krystyna Da̧browska ◽  
Johannes Binder ◽  
Mateusz Tokarczyk ◽  
Jakub Iwański ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Optical Quality ◽  
Heteroepitaxial Growth ◽  
High Optical Quality ◽  
Wafer Scale

scholarly journals Al2O3/TiO2 inverse opals from electrosprayed self-assembled templates

2018 ◽  
Vol 9 ◽  
pp. 216-223 ◽  
Author(s):  
Arnau Coll ◽  
Sandra Bermejo ◽  
David Hernández ◽  
Luís Castañer
Keyword(s):  
Three Dimensional ◽  
Optical Quality ◽  
High Optical Quality ◽  
Inverse Opals ◽  
Large Size ◽  
Fabrication Errors ◽  
Supporting Layer ◽  
Higher Temperature ◽  
Self Assembled ◽  
High Dielectric

The fabrication of high optical quality inverse opals is challenging, requiring large size, three-dimensional ordered layers of high dielectric constant ratio. In this article, alumina/TiO2–air inverse opals with a 98.2% reflectivity peak at 798 nm having an area of 2 cm2 and a thickness of 17 µm are achieved using a sacrificial self-assembled structure of large thickness, which was produced with minimum fabrication errors by means of an electrospray technique. Using alumina as the first supporting layer enables the deposition of TiO2 at a higher temperature, therefore providing better optical quality.

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