Effect of photonic stop-band on the modes of a weakly scattering DCM-PVA waveguide random laser

2017 ◽  
Vol 110 (25) ◽  
pp. 251104 ◽  
Author(s):  
Anirban Sarkar ◽  
N. N. Subhashree Ojha ◽  
B. N. Shivakiran Bhaktha
Keyword(s):  
Stop Band ◽  
Random Laser ◽  
Photonic Stop Band

Sol–Gel Fabrication and Luminescence Properties of Multilayer Eu-Doped BaTiO3–SiO2 Xerogel Nanostructures

2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940044 ◽  
Author(s):  
Yu. D. Karnilava ◽  
P. A. Kholov ◽  
N. V. Gaponenko ◽  
T. F. Raichenok ◽  
S. A. Tikhomirov ◽  
...  
Keyword(s):  
Multilayer Structure ◽  
Sol Gel ◽  
Stop Band ◽  
Fused Silica ◽  
Transmission Spectra ◽  
Reflection And Transmission ◽  
Main Band ◽  
Photonic Stop Band ◽  
Band Position ◽  
Double Exponential

With the use of sol–gel method BaTiO3–SiO2 multilayer structures were fabricated on glass or fused silica substrates employing dipping or spinning procedure. The photonic stop band was observed in the reflection and transmission spectra of the multilayer structure annealed at [Formula: see text]C. It is redshifted with an increase of the thicknesses of BaTiO3 and SiO2 layers. For structures comprising Eu-doped BaTiO3 layers of different thicknesses photoluminescence with the main band at 614[Formula: see text]nm was detected. It is characterized with the double-exponential decay with the lifetimes of about 0.5[Formula: see text]ms and 1.1[Formula: see text]ms which do not depend significantly on the photonic stop band position.

A Multichannel Filter Based on the Finite Plasma Photonic Crystal

2013 ◽  
Vol 538 ◽  
pp. 297-300 ◽  
Author(s):  
Chien Jang Wu ◽  
Ya Ju Lee ◽  
Tzu Chyang King ◽  
Wen Kai Kuo
Keyword(s):  
Photonic Crystal ◽  
Plasma Layer ◽  
Dielectric Material ◽  
Stop Band ◽  
Pass Band ◽  
Multiple Channels ◽  
Photonic Stop Band ◽  
Multichannel Filter ◽  
Plasma Photonic Crystal ◽  
Transmission Filter

A design of multichannel transmission filter at microwave is proposed. It is based on the use of the finite plasma photonic crystal operating at frequency below the plasma frequency. We consider a design structures of (AB)qA, where A is the dielectric material, B is the plasma layer, and q is the number of periods. It is found that the number of channels is equal to q-1. We show that the locations such multiple channels are in the pass band of the infinite plasma-dielectric photonic crystal. The idea of such design is thus to engineer the photonic pass band, which is fundamentally different from the usual design by engineering the photonic stop band like the multilayer Fabry-Perot transmission filter. The physical mechanism of multiple channels is also discussed.

Low-threshold lasing at the edge of a photonic stop band in cholesteric liquid crystals

1998 ◽  
Vol 23 (21) ◽  
pp. 1707 ◽  
Author(s):  
V. I. Kopp ◽  
B. Fan ◽  
H. K. M. Vithana ◽  
A. Z. Genack
Keyword(s):  
Liquid Crystals ◽  
Stop Band ◽  
Cholesteric Liquid Crystals ◽  
Photonic Stop Band ◽  
Low Threshold

scholarly journals Large Coherence Area Thin-Film Photonic Stop-Band Lasers

2001 ◽  
Vol 86 (9) ◽  
pp. 1753-1756 ◽  
Author(s):  
Victor I. Kopp ◽  
Azriel Z. Genack ◽  
Zhao-Qing Zhang
Keyword(s):  
Thin Film ◽  
Stop Band ◽  
Photonic Stop Band ◽  
Coherence Area
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