title: ÐÐ»Ð¸ÑÐ½Ð¸Ðµ Ð±ÐµÑÐ¿Ð¾ÑÑÐ´ÐºÐ° Ð½Ð° Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½ÑÑ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¸Ñ ÑÑÑÑÐºÑÑÑ Ñ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÐ¼Ð¸ ÑÐ¼Ð°Ð¼Ð¸ InGaN/GaN
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Influence of disorder on the optical properties of resonant Bragg structures with InGaN/GaN quantum wells
Creators: name: ÐÐ²Ð°Ð½Ð¾Ð², ÐÐ»ÐµÐºÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð­ÐºÑÐ¸ÑÐ¾Ð½Ñ (ÑÐ¸Ð·.)
ÐÐ°Ð»Ð»Ð¸Ð¹, Ð½Ð¸ÑÑÐ¸Ð´Ñ
ÐÐ¿ÑÐ¸ÐºÐ°
ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½Ð°Ñ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ°Ñ ÑÑÑÑÐºÑÑÑÐ°
Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¸Ð¹ ÑÐµÐ·Ð¾Ð½Ð°Ð½Ñ
ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð±ÐµÑÐ¿Ð¾ÑÑÐ´Ð¾Ðº
resonant bragg structures
bragg resonance
critical spatial disorder

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÐ»Ð¸ÑÐ½Ð¸Ðµ Ð±ÐµÑÐ¿Ð¾ÑÑÐ´ÐºÐ° Ð½Ð° Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½ÑÑ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¸Ñ ÑÑÑÑÐºÑÑÑ Ñ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÐ¼Ð¸ ÑÐ¼Ð°Ð¼Ð¸ InGaN/GaNÂ». ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð¾Ð±ÑÐ°Ð·ÑÐ° ÑÐ¾ 100 ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÐ¼Ð¸ ÑÐ¼Ð°Ð¼Ð¸ InGaN, ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ð½ÑÐ¼Ð¸ ÑÑÐ½Ð½ÐµÐ»ÑÐ½Ð¾-Ð½ÐµÐ¿ÑÐ¾Ð·ÑÐ°ÑÐ½ÑÐ¼Ð¸ Ð±Ð°ÑÑÐµÑÐ°Ð¼Ð¸ GaN. Ð­ÑÐ° ÑÐ¸ÑÑÐµÐ¼Ð° Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÑÐµÑÑÑ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ð½Ð¾Ð¹ Ð´Ð»Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ð¸ Ð² ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°Ñ, Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, Ð² Ð²Ð¸Ð´Ðµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸ Ð¸Ð»Ð¸ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸ Ð¿ÐµÑÐµÑÑÑÐ°Ð¸Ð²Ð°ÐµÐ¼ÑÑ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¸Ñ Ð¾ÑÑÐ°Ð¶Ð°ÑÐµÐ»ÐµÐ¹. Ð¡Ð¿ÐµÐºÑÑÑ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾ÑÑÐ°Ð¶ÐµÐ½Ð¸Ñ Ð¸ Ð¿ÑÐ¾Ð¿ÑÑÐºÐ°Ð½Ð¸Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð»Ð¸ÑÑ Ð¿ÑÐ¸ ÑÐ°Ð·Ð½ÑÑ ÑÐ³Ð»Ð°Ñ Ð¿Ð°Ð´ÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¿Ð°Ð´Ð°ÑÑÐµÐ³Ð¾ ÑÐ²ÐµÑÐ° Ð¿ÑÐ¸ ÐºÐ¾Ð¼Ð½Ð°ÑÐ½Ð¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐµ. ÐÐµÑÐ¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° Ð¼Ð¾Ð´ÐµÐ»Ñ, Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÐ°Ñ Ð¾Ð¿Ð¸ÑÐ°ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»Ð¸ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ ÑÐºÑÐ¸ÑÐ¾Ð½Ð¾Ð² Ð² ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÑÐ¼Ð°Ñ. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð° Ð²ÑÐ·Ð²Ð°Ð½Ð½Ð°Ñ Ð±ÐµÑÐ¿Ð¾ÑÑÐ´ÐºÐ¾Ð¼ Ð´ÐµÐ³ÑÐ°Ð´Ð°ÑÐ¸Ñ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾ÑÑÐ°Ð¶ÐµÐ½Ð¸Ñ Ð¾Ñ Ð¿Ð¾ÑÑÐ¸ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ²Ð°Ð·Ð¸Ð´Ð²ÑÐ¼ÐµÑÐ½ÑÑ ÑÐºÑÐ¸ÑÐ¾Ð½Ð¾Ð² Ð² ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÑÐ¼Ð°Ñ InGaN, Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð¾Ð²Ð°Ð½Ð½ÑÑ Ð¿Ð¾ ÑÐ¸Ð¿Ñ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½Ð¾Ð¹ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¾Ð¹ ÑÑÑÑÐºÑÑÑÑ. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ ÑÑÑÐµÑÑÐ²ÑÐµÑ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¾ÑÐºÐ»Ð¾Ð½ÐµÐ½Ð¸Ðµ Ð¾Ñ ÑÐ¾ÑÐ½Ð¾Ð¹ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐ½Ð¾ÑÑÐ¸, ÐºÐ¾Ð³Ð´Ð° Ð¾ÑÑÐ°Ð¶ÐµÐ½Ð¸Ðµ Ð¾Ñ Ð¾Ð´Ð¸Ð½Ð¾ÑÐ½Ð¾Ð¹ ÑÐ²ÐµÑÑÐ¸Ð·Ð»ÑÑÐ°ÑÑÐµÐ¹ ÑÐºÑÐ¸ÑÐ¾Ð½-Ð¿Ð¾Ð»ÑÑÐ¸ÑÐ¾Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´Ñ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð¸ÑÑÐµÑÑÑ Ð² Ð¼Ð½Ð¾Ð³Ð¾Ð¼Ð¾Ð´Ð¾Ð²ÑÐ¹ ÑÐ¿ÐµÐºÑÑ. Ð­ÑÐ¾Ñ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð±ÐµÑÐ¿Ð¾ÑÑÐ´Ð¾Ðº Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÐµÑÑÑ Ð¾Ð±ÑÐ°ÑÐ½Ð¾ Ð¿ÑÐ¾Ð¿Ð¾ÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½ÑÐ¼ ÑÐ¸ÑÐ»Ñ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¾Ð² ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½Ð¾Ð¹ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¾Ð¹ ÑÑÑÑÐºÑÑÑÑ. ÐÑÐ¿Ð¾Ð»ÑÐ·ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾ Ð¿ÑÐ¾Ð²ÐµÑÐµÐ½Ð½ÑÑ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÑ Ð¼Ð¾Ð´ÐµÐ»Ñ, Ð¼Ñ Ð¾Ð±Ð½Ð°ÑÑÐ¶Ð¸Ð»Ð¸, ÑÑÐ¾ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¾Ðµ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ½Ð¾Ðµ Ð¾ÑÐºÐ»Ð¾Ð½ÐµÐ½Ð¸Ðµ Ð¾Ñ ÑÐ¾ÑÐ½Ð¾Ð¹ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐ½Ð¾ÑÑÐ¸ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÐµÑ 1.76 %, 1.0 % Ð¸ 0.45 % Ð´Ð»Ñ ÑÐµÐ·Ð¾Ð½Ð°Ð½ÑÐ½Ð¾Ð¹ Ð±ÑÑÐ³Ð³Ð¾Ð²ÑÐºÐ¾Ð¹ ÑÑÑÑÐºÑÑÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÐºÐ²Ð°Ð½ÑÐ¾Ð²ÑÑ ÑÐ¼ InGaN Ñ 60, 100 Ð¸ 200 Ð¿ÐµÑÐ¸Ð¾Ð´Ð°Ð¼Ð¸ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÐµÐ½Ð½Ð¾.
description: The subject of the graduate qualification work is âInfluence of disorder on the optical properties of resonant Bragg structures with InGaN/GaN quantum wellsâ. The given work is devoted to studying the optical properties of the sample with of 100 InGaN quantum wells separated by non-tunneling GaN barriers. This material system seems to be most promising for implementation of the concept into devices, for instance, as electrically or optically tunable Bragg reflectors.Optical reflectance and transmittance spectra were studied at different angles of incidence for different polarization of the incident light at room temperature. A model has been verified that makes it possible to describe the experimental data and determine the parameters of excitons in quantum wells.We study a disorder-induced degradation of the resonant optical reflection from a nearly periodic system of quasi-2D excitons in the InGaN quantum wells arranged as a resonant Bragg structure. We show that there is a critical deviation from the exact periodicity when the reflection by a single super-radiant exciton-polariton mode is transformed into a multimode spectrum. This critical disorder appears to be inversely proportional to the number of periods in the resonant Bragg structure. Using an experimentally verified numerical model we found the critical standard deviation from exact periodicity to be 1.76%, 1.0%, and 0.45% for InGaN-based resonant Bragg structure with 60, 100, and 200 periods, respectively.Â