6533b7dbfe1ef96bd126fe0b

RESEARCH PRODUCT

<title>Second harmonic generation in selenium thin films</title>

Arnis GulbisJ. TeterisVj. GerbredersVadims KolbjonoksE. Sledevskis

subject

WavelengthMaterials sciencelawFemtosecondAnalytical chemistryHarmonicSecond-harmonic generationNonlinear opticsThin filmLaserAmorphous solidlaw.invention

description

Results of second harmonic (SH) generation in amorphous and crystalline selenium films induced by titanium-sapphire femtosecond laser (wavelength λ - 800-1000 nm) are presented. It is found that the highest intensity of SH is provided by fundamental wave at wavelength 1000 nm and it reaches maximum in approximately 100 sec. The intensity of transmitted SH depends on film thickness while that of reflected does not.

https://doi.org/10.1117/12.815490