Ultrafast Below-Band-Gap Laser Pulse Induced Relaxations in CdS Crystal

18th International Youth Scientific School "Coherent Optics and Optical Spectroscopy"

Shmelev, A.G.^1 ; Leontyev, A.V.^1 ; Nikiforov, V.G.^1 ; Ivanin, K.V.^1 ; Lobkov, V.S.^1 ; Khasanov, O.Kh.^2 ; Samartsev, V.V.^1,3

Zavoisky Physical-Technical Institute, Sibirsky tract 10/7, Kazan

420029, Russia^1

Scientific-Practical Material Research Centre, Belarus National Academy of Sciences, P. Brovki St. 19, Minsk

220072, Belarus^2

Kazan Federal University, Kremlyovskaya St.18, Kazan

420008, Russia^3

关键词: Band edge;    Inter-band transition;    Lower energies;    Spectrally-resolved four-wave mixing;    Ultra-fast;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/613/1/012014/pdf
DOI  :  10.1088/1742-6596/613/1/012014

来源: IOP

【 摘 要 】

We report an experimental study of the intra- and interband transitions in bulk CdS crystal induced by a strong below-band-edge femtosecond laser pulse. An additional peak was observed in spectrally resolved four-wave mixing signal shifted to lower energy and positive time delay.