Lasing by Second-Order Bragg Diffraction in Dye-Doped POLIPHEM Gratings
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A composite LC/polymer structure, patented as POLIPHEM, when properly doped with a dye is a promising material for compact tunable laser sources. We analyze the properties of distributed feedback system in a form of volume periodic grating in a medium with gain. The conditions required for lasing threshold achievement are considered for second-order Bragg diffraction regimes. First experimental results on the lasing in POLIPHEM DFB oscillator are reported.
Molecular Crystals and Liquid Crystals
Lasers and Quantum Electronics
Photonics, Optoelectronics and Optical Communications