Terahertz Spectroscopy of Germanium with Different Doping Levels

Alexey Shakhmin, Affiliation: Optical coatings department, TYDEX LLC, Saint Petersburg 194292, Russia Educational background: 1. MS in Technical Physics, Peter the Great St. Petersburg Polytechnic University, 2004–2006. 2. PhD (Candidate of Science, the Russian scientific degree) in Semiconductor Physics, The Ioffe Physical-Technical Institute. Thesis Submitted: Cathodoluminescence methods for studying laser heterostructures based on ZnSe (2012). Working experience: 2006–2013, Junior Research Assistant, The Ioffe Physical-Technical Institute; 2014–Present, Leading research engineer at Optical coatings department, TYDEX LLC. Research interests: Spectroscopy (UV, visible, IR and THz spectral ranges), optical materials, optical components, optical coatings, climatic testing. 25 scientific publications in English, 82 citations, h-Index: 5 (in accordance with Scopus database). ORCID ID: 0009-0003-9566-2823 Detailed Author contributions: Data Curation, Investigation, Methodology, Software, Formal Analysis

Sergey Musikhin, Affiliation: Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia Educational background: 1. MS in Optoelectronic Devices, Department of Semiconductor physics, Leningrad Polytechnic Institute (Peter the Great St. Petersburg Polytechnic University), graduated with honors (1973). 2. PhD (Candidate of Science, the Russian scientific degree) in Semiconductor Physics, Department of Semiconductor physics, Leningrad Polytechnic Institute, Thesis: Optical and electrical properties of PbS-Si heterostructures (1986). Working experience: 1975–1976, Engineer, LOMO, St.Petersburg, Russia; 1976-2001 Engineer, Researcher, Senior Researcher, Associate Professor, Leningrad Polytechnic Institute (Peter the Great St. Petersburg Polytechnic University), Russia 2001-2010 Postdoctoral Fellowship, Research Associate, University of Toronto, Canada 2010–Present, Peter the Great St. Petersburg Polytechnic University, Russia Research interests: Semiconductor Physics; Nanotechnology; Photonics; Optoelectronics; Optical Materials; Terahertz Optics;  Semiconductor Device Physics; Single Molecule Detection. 65 scientific publications in English, 1321 citations, h-Index: 12 (in accordance with Scopus database). Total number of scientific publications: 128. ORCID ID: 0000-0003-2863-9087 Detailed Author contributions: Conceptualization, Formal analysis, Software, Methodology, Writing—original draft, Writing—review and editing, Visualization.

Grigory I. Kropotov, Affiliation: TYDEX, LLC, Saint Petersburg 194292, Russia Educational background: 1. MS in Physics and Engineering, Department of Semiconductor physics, Radio-Physical Faculty, Leningrad Polytechnic Institute (later renamed as Peter the Great St. Petersburg Polytechnic University), graduated with honors (1977). 2. PhD (Candidate of Science, the Russian scientific degree) in Semiconductor Physics, Department of Semiconductor Physics, Radio-Physical Faculty, Leningrad Polytechnic Institute. Thesis Submitted: Submillimeter photoelectric magnetospectroscopy of impurities and radiation defects in n-Ge (1982). Working experience: 1977–1996, Engineer, Junior Research Scientist, Research Scientist, Senior Research Scientist, Ioffe Physical Technical Institute, St.Petersburg, Russia; 1994–2002, Commercial Director, TYDEX, LLC, St.Petersburg, Russia; 2002–Present, General Manager (CEO), TYDEX, LLC, St.Petersburg, Russia. Research interests: Photonics; Optoelectronics; Optics and Photonics; Applied Optics; Applied Physics; Optical Materials; Applied / Experimental Physics; Semiconductor; Terahertz; Optics. 52 scientific publications in English, 379 citations, h-Index: 10 (in accordance with Scopus database). Total number of scientific publications: 163. ORCID ID: 0000-0001-9041-6701 Detailed Author contributions: Conceptualization, Project administration, Supervision, Writing—review and editing, Funding acquisition.