权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

DFG-RSF: Polytype and isotope engineering of silicon carbide for quantum microwave amplifiers

DFG-RSF：用于量子微波放大器的碳化硅的多型和同位素工程

基本信息

批准号：
310370333
负责人：
Professor Dr. Vladimir Dyakonov
金额：
--
依托单位：
Ioffe Institute
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/310370333?language=en
关键词：
DFG RSF Polytype isotope engineering

项目摘要

Masers are known as one of the best microwave (MW) amplifiers. The functionality of masers is based on a purely quantum effect - stimulated microwave emission - and this is the reason why maser (or quantum) amplifiers have extremely low intrinsic noise levels. However, the application of masers is up to now limited to a few niche uses only. The reason is that modern masers require specific conditions for operation, such as cryogenic temperatures or ultra high vacuum. A new type of maser, that can operate at ambient conditions and is compatible with standard manufacturing technology, would have enormous impact on our every-day life, similar as semiconductor lasers have at present. The purpose of this project is to solve the main problem, i.e., to demonstrate quantum MW amplification at room temperature. To achieve this goal, we use vacancy-related defects in silicon carbide (SiC), where optically generated population inversion and stimulated emission have been demonstrated. We will consider theoretically the fine structure of color centers in SiC having different symmetry, and investigate experimentally the pumping mechanism of the vacancy-related color centers in various polytypes using electron spin resonance (ESR) and optically-detected magnetic resonance (ODMR) techniques. We will use various planar MW resonators/waveguides and highly sensitive techniques to reduce losses and detect MW amplification based on the maser effect in our optimized samples.

微波激射器被认为是最好的微波（MW）放大器之一。脉泽的功能是基于纯粹的量子效应-受激微波发射-这就是为什么脉泽（或量子）放大器具有极低的固有噪声水平的原因。然而，脉泽的应用到目前为止仅限于少数利基用途。原因是现代脉泽需要特定的操作条件，例如低温或超高真空。一种新型的微波激射器，可以在环境条件下工作，并与标准的制造技术兼容，将对我们的日常生活产生巨大的影响，就像目前的半导体激光器一样。该项目的目的是解决主要问题，即，以证明在室温下的量子MW放大。为了实现这一目标，我们使用碳化硅（SiC）中的空位相关缺陷，其中光学产生的粒子数反转和受激发射已被证明。我们将从理论上考虑具有不同对称性的SiC中色心的精细结构，并使用电子自旋共振（ESR）和光检测磁共振（ODMR）技术在实验上研究各种多型体中与空位相关的色心的泵浦机制。我们将使用各种平面微波谐振器/波导和高灵敏度的技术，以减少损失和检测微波放大的基础上，在我们的优化样品的微波激射效应。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Spin and Optical Properties of Silicon Vacancies in Silicon Carbide − A Review

碳化硅中硅空位的自旋和光学性质 â 综述

DOI：
10.1002/pssb.201700258
发表时间：
2018
期刊：
physica status solidi (b)
影响因子：
0
作者：
S. A. Tarasenko;A. V. Poshakinskiy;D. Simin;V. A. Soltamov;E. N. Mokhov;P. G. Baranov;V. Dyakonov;G. V. Astakhov
通讯作者：
G. V. Astakhov

Influence of Irradiation on Defect Spin Coherence in Silicon Carbide