Open AccessРасчет эффективности удвоения частоты излучения субтерагерцового гиротрона за счет решеточной нелинейности в монокристаллической пластине InP
Author(s) -
В.В. Румянцев,
А.П. Фокин,
А.А. Дубинов,
С.С. Морозов,
А.А. Богдашов,
В.В. Паршин,
М.Ю. Глявин,
В.И. Гавриленко,
С.В. Морозов
Publication year - 2021
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2021.10.51433.31
Subject(s) - materials science , terahertz radiation , optics , gyrotron , crystal (programming language) , waveguide , optoelectronics , energy conversion efficiency , wafer , radiation , physics , quantum mechanics , computer science , programming language , electron
In this work, we calculated the efficiency of second harmonic generation for sub-THz gyrotron radiation in a single-crystal InP plate embedded in a conical metal waveguide. For the values of the losses at the doubled frequency (depending on the degree of purity of the InP crystal), the dimensions of the wafer are revealed that provide the optimal effective frequency conversion. Thus, the conversion factor f –>2f can reach 5 W/kW^2 when pumped at a frequency of 263 GHz and a loss of alpha_2f = 0.1 cm^-1. The possibility of a noticeable increase in the efficiency of frequency doubling with fine tuning of the phase matching due to the selection of the size of the submicron gap between the InP plate and the plates of the metal waveguide is shown. The results obtained can be used to solve applied problems in the field of dynamic nuclear polarization spectroscopy and nuclear magnetic resonance studies.