Distributed feedback leaky laser emission from dye doped gel-glass dispersed liquid crystal thin film patterned by soft lithography

2011 ◽  
Vol 34 (1) ◽  
pp. 189-193 ◽  
Author(s):  
Lujian Chen ◽  
Fengyu Gao ◽  
Chun Liu ◽  
Qiong Zhou ◽  
Sensen Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Soft Lithography ◽  
Laser Emission ◽  
Distributed Feedback

scholarly journals Temperature-tunable lasing from dye-doped chiral microdroplets encapsulated in a thin polymeric film

2018 ◽  
Vol 9 ◽  
pp. 379-383 ◽  
Author(s):  
Gia Petriashvili ◽  
Mauro Daniel Luigi Bruno ◽  
Maria Penelope De Santo ◽  
Riccardo Barberi
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Polyvinyl Alcohol ◽  
Laser Emission ◽  
Laser Wavelength ◽  
Polymeric Film ◽  
Water Evaporation ◽  
Temperature Dependent ◽  
Free Standing ◽  
Optical Microcavities

In the last decade, much interest has grown around the possibility to use liquid-crystal droplets as optical microcavities and lasers. In particular, 3D laser emission from dye-doped cholesteric liquid crystals confined inside microdroplets paves the way for many applications in the field of sensors or tunable photonics. Several techniques can be used to obtain small microresonators as, for example, dispersing a liquid crystal inside an immiscible isotropic fluid to create an emulsion. Recently, the possibility to obtain a thin free-standing film starting from an emulsion having a mixture of water and polyvinyl alcohol as isotropic matrix has been reported. After the water evaporation, a polymeric film in which the microdroplets are encapsulated has been obtained. Bragg-type laser emission has been recorded from the emulsion as well as from the thin film. Here, we report on the possibility to tune the laser emission as a function of temperature. Using a chiral dopant with temperature dependent solubility, the emitted laser wavelength can be tuned in a range of 40 nm by a temperature variation of 18 °C. The proposed device can have applications in the field of sensors and for the development of anti-counterfeiting labels.

Multimode distributed feedback laser emission in a dye-doped optically pumped polymer thin-film

2004 ◽  
Vol 27 (2) ◽  
pp. 199-201 ◽  
Author(s):  
F. Sobel ◽  
D. Gindre ◽  
J.-M. Nunzi ◽  
C. Denis ◽  
V. Dumarcher ◽  
...  
Keyword(s):  
Thin Film ◽  
Laser Emission ◽  
Distributed Feedback ◽  
Distributed Feedback Laser ◽  
Optically Pumped ◽  
Polymer Thin Film

Active Liquid Crystal Devices Incorporating Liquid Crystal Polymer Thin Film Waveplates

1999 ◽  
Vol 38 (Part 1, No. 1A) ◽  
pp. 95-100 ◽  
Author(s):  
Yoriko Morita ◽  
Jay E. Stockley ◽  
Kristina M. Johnson ◽  
Eckhard Hanelt ◽  
Frank Sandmeyer
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Liquid Crystal Polymer ◽  
Polymer Thin Film ◽  
Liquid Crystal Devices ◽  
Crystal Polymer ◽  
Active Liquid

Quasi-Continuous-Wave Organic Thin-Film Distributed Feedback Laser

2016 ◽  
Vol 4 (6) ◽  
pp. 834-839 ◽  
Author(s):  
Atula S. D. Sandanayaka ◽  
Kou Yoshida ◽  
Munetomo Inoue ◽  
Chuanjiang Qin ◽  
Kenichi Goushi ◽  
...  
Keyword(s):  
Thin Film ◽  
Continuous Wave ◽  
Distributed Feedback ◽  
Organic Thin Film ◽  
Distributed Feedback Laser
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