SBIR Phase I:A Miniature Active Q-Switched Laser based on a Fast Space-Charge- Controlled Electro-Optic (SCC-EO) Deflector with Ultra-low Driving Voltage

SBIR 第一阶段：基于超低驱动电压的快速空间电荷控制电光 (SCC-EO) 偏转器的微型有源调Q激光器

• 批准号: 1249070
• 负责人: Pengfei Wu
• 金额: $ 15万
• 依托单位: Crystal Research, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1249070&HistoricalAwards=false
• 关键词: SBIR; Phase; Miniature; Active; Switched

This Small Business Innovation Program (SBIR) Phase I project will develop a novel miniature actively Q-switched laser that can be driven by a simple low-voltage circuit. Portable actively Q-switched lasers with adjustable repetition rates delivering high-power pulses in nanoseconds have broad and significant applications in scientific research, biomedicines, sensing, and measurements. Existing active Q-switching techniques have either slow switching speed or high driving voltage and thus not ideal for portable Q-switch lasers of high performance and efficiency. The key innovation of this project is to exploit a unique space-charge-controlled electro-optic effect by a low driving voltage in a compact solid-state laser cavity to implement active Q-switching with fast transition time, high dynamic loss and low insertion loss. The proposed research involves innovations of both device design and electro-optic material fabrication for pulsed laser generation with significant improvement in laser efficiency, compactness and cost. Phase I will design and fabricate the novel electro-optic Q-switch to develop portable Q-switched laser. The performance of the device will be optimized in Phase II to yield a functional and robust prototype with improved performance and cost reduction to support commercial potential applications.The broader impact/commercial potential of this project is the development of a new class of portable actively Q-switched laser with improvement in speed, control and efficiency to enhance laser-related technologies and commercial applications. The proposed laser employs a fast Q-switching technique to generate high-power laser pulses with low driving voltage, enabling a simple driving electronics, compact size, light weight and low cost, while maintaining all parameters of performance required by applications in clinical treatments, remote sensing, and information technology. The Q-switched laser with short pulse duration, small size, low-driving voltage and ease of operation, has been recognized as the gold standard for effective aesthetic and skin treatments. Compact, portable Q-switched lasers are also critical transmitters for field sensing and measurements including surveillance ladar, laser rangefinders, atmospheric detection, laser-induced breakdown spectroscope, and laser bio-chemical agent detections. Besides high-power laser pulse generation, the novel electro-optic deflector device that manipulates the light propagation direction will have significant impacts on the means of light control, processing and transformation, offering great commercial opportunities in optical communications and technologies of printers, copiers and displays.

这个小型企业创新计划（SBIR）第一阶段项目将开发一种新型的微型主动调q激光器，可以由一个简单的低压电路驱动。具有可调重复率的便携式主动调q激光器在纳秒内提供高功率脉冲，在科学研究，生物医学，传感和测量中具有广泛而重要的应用。现有的有源q开关技术要么开关速度慢，要么驱动电压高，因此不适合高性能和高效率的便携式q开关激光器。本课题的关键创新点在于利用一种独特的空间电荷控制电光效应，在紧凑的固体激光腔中以低驱动电压实现快跃化时间、高动态损耗和低插入损耗的主动q开关。提出的研究涉及脉冲激光产生的器件设计和电光材料制造的创新，在激光效率，紧凑性和成本方面有显着改善。第一阶段将设计制作新型电光调q开关，开发便携式调q激光器。该设备的性能将在第二阶段进行优化，以产生功能强大的原型，提高性能并降低成本，以支持潜在的商业应用。该项目的更广泛影响/商业潜力是开发一种新型便携式主动调q激光器，提高速度，控制和效率，以加强激光相关技术和商业应用。该激光器采用快速q开关技术，以低驱动电压产生高功率激光脉冲，使驱动电子元件简单，体积小，重量轻，成本低，同时保持临床治疗，遥感和信息技术应用所需的所有性能参数。调q激光器脉冲持续时间短，体积小，驱动电压低，操作方便，已被公认为有效的美容和皮肤治疗的黄金标准。紧凑、便携的调q激光器也是现场传感和测量的关键发射机，包括监视雷达、激光测距仪、大气探测、激光诱导击穿分光镜和激光生化剂探测。除了产生高功率激光脉冲外，操纵光传播方向的新型电光偏转器装置将对光的控制、处理和转换手段产生重大影响，为光通信和打印机、复印机、显示器技术提供巨大的商业机会。