Nonlinear Optical Absorption Properties of Sputtered WSe2 Thin-films in the Near-Infrared Spectral Band
نویسندگان
چکیده
We present a detailed investigation on the intensity dependent third-order nonlinear optical (NLO) properties of RF-sputtered WSe2 thin film using ultra short pulses. The employed single-beam Z-scan technique near-infrared (NIR) pulses centered at 1030 nm for ascertaining NLO response. results reveal reverse saturable absorption (RSA) signature, which is primarily due to contribution from two-photon (TPA). explored impact high fluence TPA process and observed weakening in film, essentially pointed towards significant free-carriers as well band-filling effect. This research elucidates insight photophysical films shows potential use limiters.
منابع مشابه
OPTICAL ABSORPTION IN Ce0 -V 0 EVAPORATE THIN FILMS
In this work, the optical absorption near the fundamental absorption edge of co-evaporated Ce0 -V20 films is studied. It is found that the fundamental optical absorption in these materials is sharp more like that expected for crystals. It is also found that as the V O content increases, the edge becomes less sharp and shifts towards higher wavelengths
متن کاملNear-resonant high order nonlinear absorption of ZnO thin films.
Nonlinear optical absorption of ZnO thin film grown by the laser molecular beam epitaxy was investigated by the Z-scan method using a frequency-doubled femtosecond Ti:sapphire laser. Due to near-exciton resonance, an enormous enhancement of two photon absorption (TPA) is about 3000 cm/GW at 390 nm which is about 6.5 times larger than the previously reported at two-photon exciton resonance in ne...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولTunable near-infrared epsilon-near-zero and plasmonic properties of Ag-ITO co-sputtered composite films
Series of co-sputtered silver-indium tin oxide (Ag-ITO) films are systematically fabricated. By tuning the atomic ratio of silver, composite films are manifested to have different microstructures with limited silver amount (<3 at.%). Two stages for film morphology changing are proposed to describe different status and growth mechanisms. The introduction of silver improves the preferred orientat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Indian Journal of Pure & Applied Physics
سال: 2023
ISSN: ['0019-5596']
DOI: https://doi.org/10.56042/ijpap.v61i7.102