Perovskite nano- and microlasers | Dr. Sergey Makarov
Dr. Sergey Makarov, ITMO University. Optical Seminar at The Department of Physics & Engineering, ITMO | 04/24/2020
Title: "Perovskite nano- and microlasers"
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Abstract: The invention and development of the laser have revolutionized science, technology, and industry. Metal halide perovskites are an emerging class of semiconductors holding promising potential in further advancing the laser technology. In this report, we provide an overview of metal halide perovskite nano- and microlasers from the viewpoint of cavity design and fabrication challenges. We discuss how to: (i) achieve ultimately small perovskite nanolasers employing Mie resonances, (ii) efficiently integrate tunable microlasers with nanowaveguides; and (iii) demonstrate upscaled perovskite lasers fabrication.
00:00:00 Intro by Dr. Anton Samusev
00:01:17 Outline talk
00:11:12 Part 1. Challenges and perovskite materials for lasers
00:20:37 Part 2. Mie resonant perovskite nanolasers
00:23:53 Questions from the chat by Dr. Mihail Petrov:
'Does the quality depend on the substrate material?'
'what is the lattice mismatch for saphire?'
'can it be other crystal?'
00:28:23 Question from the chat by Dr. Alexey Shcherbakov:
'What is a typical intensity threshold?'
00:32:00 Part 3. Coupling of the resonator to nanowaveguide
00:39:29 Part 4. In situ tuning of halide perovskites
00:41:44 Part 5. Scale-up nano and microlasers fabrication
00:45:43 Question from the chat by Dr. Ivan Iorsh:
'Were the spatial coherence of such an array studied?'
00:46:52 Question #1 by Prof. Konstantin Simovskii
00:49:40 Question #2 by Prof. Konstantin Simovskii
00:51:39 Question #3 by Prof. Konstantin Simovskii
00:56:12 Part 6. The summary and Outlook
00:59:34 Invitation to SLALOM online summer - school
01:00:25 Question by Dr. Anton Samusev
01:04:46 Question from the chat by Dr. Ivan Iorsh:
'I heard that in the field of integrated lasers they usually quite interested in the modulation properties of these structures. I.e. the maximum frequency you can efficiently modulate the intensity. Do you have any estimates on that? As compared to conventional GaAs. Another question (probably I missed) - what are the possible routes towards the electrical pump?
you modulate the intensity of the pump?'
01:08:26 Closing remarks by Dr. Anton Samusev
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