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

fYear

2014

fDate

June 30 2014-July 4 2014

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser Optics, 2014 International Conference

Conference_Location

Saint Petersburg

Print_ISBN

978-1-4799-3884-1

Type

conf

DOI

10.1109/LO.2014.6886401

Filename

6886401