Color cone lasing emission in a dye-doped cholesteric liquid crystal with a single pitch.
This work investigates a novel color cone lasing emission (CCLE) based on a one-dimensional photonic crystal-like dye-doped cholesteric liquid crystal (DDCLC) film with a single pitch. The lasing wavelength in the CCLE is distributed continuously at 676.7-595.6 nm, as measured at a continuously increasing oblique angle relative to the helical axis of 0-50 degrees . This work demonstrates that lasing wavelength coincides exactly with the wavelength at the long wavelength edge of the CLC reflection band at oblique angles of 0-50 degrees . Simulation results of dispersion relations at different oblique angles using Berreman's 4X4 matrix method agrees closely with experimental results. Some unique and important features of the CCLE are identified and discussed.
Lee
C-R
CR
Institute of Electro-Optical Science and Engineering and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan 701, Republic of China. crlee@mail.ncku.edu.tw
Lin
S-H
SH
Yeh
H-C
HC
Ji
T-D
TD
Lin
K-L
KL
Mo
T-S
TS
Kuo
C-T
CT
Lo
K-Y
KY
Chang
S-H
SH
Fuh
Andy Y-G
AY
Huang
S-Y
SY
D002784:Cholesterol / Q000737:chemistry*; D003198:Computer Simulation; D004867:Equipment Design; D005898:Glass; D007834:Lasers; D050866:Liquid Crystals / Q000737:chemistry*; D055095:Optics and Photonics; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012031:Refractometry
D011142:Polyvinyl Alcohol; D002784:Cholesterol