TY - JOUR
T1 - Ultrashort laser pulse doubling by metal-halide perovskite multiple quantum wells
AU - Guo, Jia
AU - Liu, Tanghao
AU - Li, Mingjie
AU - Liang, Chao
AU - Wang, Kaiyang
AU - Hong, Guo
AU - Tang, Yuxin
AU - Long, Guankui
AU - Yu, Siu Fung
AU - Lee, Tae Woo
AU - Huang, Wei
AU - Xing, Guichuan
N1 - Funding Information:
We thank Professor T.C. Sum from Nanyang Technological University for providing some experimental facilities as well as for scientific discussions. The authors are grateful to the start-up fund (P0031122) from the Hong Kong Polytechnic University, the Macau Science and Technology Development Funds (FDCT-116/2016/A3, FDCT-091/2017/A2, and 014/2017/AMJ), the Research Funds (SRG2016-00087-FST and MYRG2018-00148-IAPME) from University of Macau and the Natural Science Foundation of China (61605073, 61935017, and 91733302) for financial support of this work.
Publisher Copyright:
© 2020, The Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/7/17
Y1 - 2020/7/17
N2 - Multiple ultrashort laser pulses are widely used in optical spectroscopy, optoelectronic manipulation, optical imaging and optical signal processing etc. The laser pulse multiplication, so far, is solely realized by using the optical setups or devices to modify the output laser pulse from the optical gain medium. The employment of these external techniques is because the gain medium itself is incapable of modifying or multiplying the generated laser pulse. Herein, with single femtosecond laser pulse excitation, we achieve the double-pulsed stimulated emission with pulse duration of around 40 ps and pulse interval of around 70 ps from metal-halide perovskite multiple quantum wells. These unique stimulated emissions originate from one fast vertical and the other slow lateral high-efficiency carrier funneling from low-dimensional to high-dimensional quantum wells. Furthermore, such gain medium surprisingly possesses nearly Auger-free stimulated emission. These insights enable us a fresh approach to multiple the ultrashort laser pulse by gain medium.
AB - Multiple ultrashort laser pulses are widely used in optical spectroscopy, optoelectronic manipulation, optical imaging and optical signal processing etc. The laser pulse multiplication, so far, is solely realized by using the optical setups or devices to modify the output laser pulse from the optical gain medium. The employment of these external techniques is because the gain medium itself is incapable of modifying or multiplying the generated laser pulse. Herein, with single femtosecond laser pulse excitation, we achieve the double-pulsed stimulated emission with pulse duration of around 40 ps and pulse interval of around 70 ps from metal-halide perovskite multiple quantum wells. These unique stimulated emissions originate from one fast vertical and the other slow lateral high-efficiency carrier funneling from low-dimensional to high-dimensional quantum wells. Furthermore, such gain medium surprisingly possesses nearly Auger-free stimulated emission. These insights enable us a fresh approach to multiple the ultrashort laser pulse by gain medium.
UR - http://www.scopus.com/inward/record.url?scp=85088146338&partnerID=8YFLogxK
U2 - 10.1038/s41467-020-17096-6
DO - 10.1038/s41467-020-17096-6
M3 - Journal article
C2 - 32681066
AN - SCOPUS:85088146338
SN - 2041-1723
VL - 11
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 3361
ER -