Polymer-Free Carbon Nanotubes Saturable Absorbers for Nanosecond Pulse Generation

5th International Symposium on Coherent Optical Radiation of Semiconductor Compounds and Structures

Zasedatelev, A.V.^1,2 ; Krasovskii, V.I.^2,4 ; Reynaud, O.^3 ; Gladush, Yu G^1 ; Kopylova, D.S.^1 ; Komochkina, E.A.^4 ; Kauppinen, E.I.^3 ; Nasibulin, A.G.^1,3,5

Skolkovo Institute of Science and Technology, Moscow, Russia^1

Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia^2

Department of Applied Physics, Aalto University School of Science, Espoo, Finland^3

National Research Nuclear University MEPhI, Moscow, Russia^4

St.Petersburg State Polytechnical University, St.-Petersburg, Russia^5

关键词: Absorption saturation intensity;    Free carbon;    Nanosecond pulse generation;    ND : YAG lasers;    Non-linear optical properties;    Passive Q-switching;    Photo-stability;    Third-order nonlinear susceptibility;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/740/1/012017/pdf
DOI  :  10.1088/1742-6596/740/1/012017

来源: IOP

【 摘 要 】

Hereby we present the results of investigations of nonlinear optical properties of single-walled carbon nanotube (CNT) thin-film saturable absorbers without binding polymers. Developed CNT-based polymer-free saturable absorbers exhibit high third-order nonlinear susceptibility: X(3)~10-8esu, low absorption saturation intensity: IS~30 mW/cm2, and high photostability. Using CNT-based polymer-free saturable absorbers for passive Q-switching mode of Nd:YAG laser, 25 ns laser pulses have been obtained.