Polychromatic liquid crystal laser arrays towards display applications.
Band-edge liquid crystal lasers are of interest for a number of applications including laser projection displays. Herein, we demonstrate simultaneous red-green-blue lasing from a single liquid crystal sample by creating a two-dimensional laser array fabricated from dye-doped chiral nematic liquid crystals. By forming a pitch gradient across the cell, and optically pumping the sample using a lenslet array, a polychromatic laser array can be observed consisting simultaneously of red-green-blue colors. Specifically, the two-dimensional polychromatic array could be used to produce a laser-based display, with low speckle and wide color gamut, whereby no complex fabrication procedure is required to generate the individual 'pixels'.
Morris
Stephen M
SM
Centre of Molecular Materials for Photonics & Electronics, Department of Engineering (Electrical Division), University of Cambridge, Cambridge, UK.
Hands
Philip J W
PJ
Findeisen-Tandel
Sonja
S
Cole
Robert H
RH
Wilkinson
Timothy D
TD
Coles
Harry J
HJ
D003116:Color; D017076:Computer-Aided Design; D003626:Data Display; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D050866:Liquid Crystals / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity