Compound Semiconductor Optical Sources for Atomic Sensors

用于原子传感器的化合物半导体光源

• 批准号: 2430039
• 金额: --
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2430039
• 关键词: Compound; Semiconductor; Optical; Sources; Atomic

Aim: Develop optical sources required for alkali-vapour based chip-scale atomic sensors, including clocks and magnetometers.Precise measurement of time is fundamental to the effective functioning of services such as transport links, communications, financial transactions, security and reliable energy. Currently, Global Navigation Satellite Systems (GNSS) provide the timing signal for these critical infrastructure services, but is vulnerable to disruption. There is a need for wide-spread miniaturised atomic clocks to provide a timing reference in the event of an outage.Magnetic field measurements, to pico-Tesla precision is required for applications in geophysical mapping, underwater ordinance detection and monitoring electrical pulses generated within the human body. Current magnetometer are bulky and dissipate substantial power in operation. Compound semiconductor (CS) light sources could reduce this power consumption significantly, whilst reducing the size and weight.Next generation chip-scale atomic sensors, using an effect know as coherent-population-trapping, require a reliable optical source with specific characteristics. Vertical-Cavity Surface-Emitting Lasers (VCSELs) are currently being considered which are compact and energy efficient. Here is an opportunity to take part in a wide-reaching activity, developing novel ways to ensure that target specifications of CS optical sources can be achieved.

目的：开发基于碱蒸汽的芯片级原子传感器所需的光源，包括时钟和磁力计，精确测量时间对于运输连接、通信、金融交易、安全和可靠能源等服务的有效运作至关重要。目前，全球导航卫星系统（GNSS）为这些关键基础设施服务提供定时信号，但很容易受到干扰。在地球物理测绘、水下条例探测和监测人体内产生的电脉冲等应用中，需要精确到皮特斯拉的磁场测量。当前磁力计体积庞大且在操作中消耗大量功率。化合物半导体（CS）光源可以显著降低这种功耗，同时减小尺寸和重量。下一代芯片级原子传感器使用称为相干布居捕获的效应，需要具有特定特性的可靠光源。垂直腔面发射激光器（VCSEL）目前正在考虑紧凑且节能。这是一个参与广泛活动的机会，开发新的方法来确保CS光源的目标规格可以实现。