Research of conditions of formation of local refractive index change on a surface of a porous glass substrate by CO2 laser radiation with the greatest possible radiuses of curvature

2004 ◽  
Author(s):  
Dmitry V. Petrov ◽  
Vadim P. Veiko ◽  
Galina K. Kostjuk ◽  
Evgeny B. Yakovlev ◽  
Tatiana V. Antropova
Keyword(s):  
Refractive Index ◽  
Laser Radiation ◽  
Porous Glass ◽  
Glass Substrate ◽  
Refractive Index Change ◽  
Index Change ◽  
Local Refractive Index

Study of the refractive index change in a-Si:H thin films patterned by 532nm laser radiation for photovoltaic applications

2010 ◽  
Vol 518 (18) ◽  
pp. 5331-5339 ◽  
Author(s):  
M. Colina ◽  
C. Molpeceres ◽  
M. Holgado ◽  
J. Gandia ◽  
O. Nos ◽  
...  
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Laser Radiation ◽  
Refractive Index Change ◽  
Index Change ◽  
Photovoltaic Applications

Theoretical Investigation of Surface Plasmon Resonance (SPR)-Based Acoustic Sensor

2017 ◽  
Vol 866 ◽  
pp. 370-374
Author(s):  
Supannee Learkthanakhachon ◽  
Suejit Pechprasarn ◽  
Manas Sangworasil ◽  
Michael G. Somekh ◽  
Naphat Albutt
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Theoretical Investigation ◽  
Plasmon Resonance ◽  
Refractive Index Change ◽  
Acoustic Sensor ◽  
Water Density ◽  
Index Change ◽  
Local Refractive Index

We report a theoretical investigation of a surface plasmon resonance (SPR)-based acoustic sensor for optical detection of ultrasound. The structure being studied is arranged in the Krestchmann configuration and the detection is performed by observing the change of refractive index of water next to the SPR metal. The acoustic pressure is simulated using COMSOL. The simulation results illustrate an insight into mechanism of pressure variation on the surface of SPR sensor due to a constructive interference of the ultrasound. This leads to a local refractive index change of water. The local refractive index change is calculated by converting the incident pressure to water density using IAPWS-95 formulation. Then, the water density is converted to the refractive index using Lorentz-Lorenz formulation. Here we report the change in the refractive index of the water to pressure, dn/dp, which is calculated to be 1.4 x 10-10 Pa-1, which is very close to the dn/dp reported by M. W. Sigrist 1986. We also investigated the effect of temperature and wavelength on the dn/dp and found that the variation in temperature and wavelength does not show any significant effect on the dn/dp relationship. We also discuss the effect of quality factor (Q) and possible improvements to enhance the sensitivity of SPR-based acoustic sensor.

Tuning the plasmon resonance of gold nanoparticles in phase-separated glass via the local refractive index change

2021 ◽  
Vol 566 ◽  
pp. 120893
Author(s):  
G. Shakhgildyan ◽  
L. Avakyan ◽  
M. Ziyatdinova ◽  
G. Atroshchenko ◽  
N. Presnyakova ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Refractive Index ◽  
Plasmon Resonance ◽  
Refractive Index Change ◽  
Index Change ◽  
Local Refractive Index

scholarly journals Morphological and in situ local refractive index change induced tuning of the optical properties of titania coated porous gold nanoparticles

2020 ◽  
Vol 128 (5) ◽  
pp. 054303
Author(s):  
Laura Juhász ◽  
Bence Parditka ◽  
Shenouda Shanda Shenouda ◽  
Misumi Kadoi ◽  
Kei-ichi Fukunaga ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Refractive Index ◽  
Optical Properties ◽  
Refractive Index Change ◽  
Index Change ◽  
Porous Gold ◽  
Local Refractive Index

Photopatterning of Metal Oxide Catalyst in Porous Glass

1986 ◽  
Vol 75 ◽  
Author(s):  
John C. Luong ◽  
Nick F. Borrelli ◽  
Jan W. H. Schreurs ◽  
Dave L. Morse
Keyword(s):  
Refractive Index ◽  
High Resolution ◽  
Porous Glass ◽  
Organometallic Compound ◽  
Glass Matrix ◽  
Oxide Catalyst ◽  
Metal Carbonyl ◽  
Refractive Index Change ◽  
Index Change ◽  
Low Refractive Index

It is well recognized that Vycor brand porous glass impregnated with a photosensitive organometallic compound can be used to produce refractive index patterns upon photolysis [1–3]. For instance, a metal carbonyl such as Mn2(CO)10 adsorbed into the porous glass matrix has been used to photopattern high resolution phase gratings albeit with low diffraction efficiencies due to the low refractive index change (Δn) so produced [1].

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