Title :
Thermal enhancement of optical harmonic generation in a fiber-coupled nematic liquid crystal
Author :
Trashkeev, S.I. ; Nyushkov, B.N.
Author_Institution :
Inst. of Laser Phys., Novosibirsk, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
Summary form only given: The temperature impact on the optical harmonic generation in a fiber-coupled nematic liquid crystal (NLC) pumped by femtosecond laser radiation was explored. A strong thermal enhancement of the third harmonic generation (THG) was revealed. Upon heating to a certain temperature (near the upper limit of the mesophase), the NLC-based convertor features a spike of the THG efficiency in excess of 10%. This effect may be attributed to noncritical phase matching. Also appreciable forth harmonic generation in the ultraviolet occurred upon the thermal enhancement of THG.
Keywords :
high-speed optical techniques; nematic liquid crystals; optical fibre couplers; optical harmonic generation; optical phase matching; optical pumping; thermo-optical effects; ultraviolet spectra; NLC-based convertor features; femtosecond laser radiation; fiber-coupled nematic liquid crystal; heating; mesophase; noncritical phase matching; optical harmonic generation; optical pumping; thermal enhancement; third harmonic generation efficiency; ultraviolet spectra; Heating; nematic liquid crystal; optical fiber; optical harmonic generation;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886401
