All-optical self-induced polarization switching by two-wave mixing in nematic liquid crystals

2004 ◽  
Author(s):  
Iam C. Khoo ◽  
Jianwu Ding ◽  
Andres Diaz
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Polarization Switching ◽  
Induced Polarization ◽  
Wave Mixing ◽  
All Optical ◽  
Two Wave Mixing

Two-wave mixing in chiral dye-doped nematic liquid crystals

2012 ◽  
Vol 37 (4) ◽  
pp. 734 ◽  
Author(s):  
D. Wei ◽  
A. Iljin ◽  
Z. Cai ◽  
S. Residori ◽  
U. Bortolozzo
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Wave Mixing ◽  
Two Wave Mixing

All optical frequency domain photoacoustic microscope based on two-wave mixing in a photo-refractive crystal

2016 ◽  
Vol 140 (4) ◽  
pp. 2980-2980
Author(s):  
Deepu George ◽  
Harriet Lloyd ◽  
Ronald H. Silverman ◽  
Parag V. Chitnis
Keyword(s):  
Frequency Domain ◽  
Optical Frequency ◽  
Wave Mixing ◽  
All Optical ◽  
Two Wave Mixing

scholarly journals Electro-optic steering of random laser emission in liquid crystals

2018 ◽  
Vol 10 (4) ◽  
pp. 103 ◽  
Author(s):  
Gaetano Assanto ◽  
Sreekanth Perumbilavil ◽  
Armando Piccardi ◽  
Martti Kauranen
Keyword(s):  
Liquid Crystals ◽  
Optical Switching ◽  
Modulational Instability ◽  
Nematic Liquid Crystals ◽  
Photothermal Effect ◽  
Random Laser ◽  
Spatial Solitons ◽  
Random Lasing ◽  
Electro Optic ◽  
All Optical

Using an external low-frequency electric field applied to dye-doped nematic liquid crystals, we demonstrate that random lasing obtained by optical pumping can be steered in angular direction by routing an all-optical waveguide able to collect the emitted light. By varying the applied voltage from 0 to 2 V, we reduce the walk-off and sweep the random laser guided beam over 7 degrees. Full Text: PDF ReferencesV. S. Letokhov, "Generation of light by a scattering medium with negative resonance absorption," Sov. Phys. JETP 26 (4), 835 (1968). DirectLink H. Cao, J. Y. Xu, D. Z. Zhang, S.-H. Chang, S. T. Ho, E. W. Seelig, X. Liu, and R. P. H. Chang, "Spatial Confinement of Laser Light in Active Random Media," Phys. Rev. Lett. 84 (24), 5584 (2000). CrossRef D. S. Wiersma, "The physics and applications of random lasers," Nature Phys. 4 (5) 359-367 (2008). CrossRef D. Wiersma and S. Cavalieri, "A temperature-tunable random laser," Nature 414, 708-709 (2001). CrossRef G. Strangi, S. Ferjani, V. 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