Nonlinear Optical Response of Au/CsPbI Quantum Dots and Its Laser Modulation Characteristics at 2.7 μm.

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Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China.

Published: August 2024


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Article Abstract

A passively Q-switched Er:YAP laser of 2.7 µm, utilizing Au-doped CsPbI quantum dots (QDs) as a saturable absorber (SA), was realized. It was operated stably with a minimum pulse width of 185 ns and a maximum repetition rate of 480 kHz. The maximum pulse energy and the maximum peak power were 0.6 μJ and 2.9 W, respectively, in the Q-switched operation. The results show that the CsPbI QDs SA exhibits remarkable laser modulation properties at ~3 μm.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11356005PMC
http://dx.doi.org/10.3390/mi15081043DOI Listing

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