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Opt Express. 2008 Nov 10;16(23):18827-37.

Polychromatic liquid crystal laser arrays towards display applications.

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Centre of Molecular Materials for Photonics & Electronics, Department of Engineering (Electrical Division), University of Cambridge, Cambridge, UK.


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'.

[Indexed for MEDLINE]

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