Novel laser technologies for the amplification and the frequency conversion of octave spanning laser sources

用于倍频程激光源放大和频率转换的新型激光技术

• 批准号: 447246-2013
• 负责人: Légaré, François
• 金额: $ 13.23万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=554520
• 关键词: Novel; laser; technologies; amplification; frequency

Today's industrial and scientific lasers operate at the physical limits of optical materials to reach extreme performances like high energies or short pulse durations. Usually, amplification takes place in laser crystals and is limited by the material damage threshold and also the spectral bandwidth a crystal can accept. We propose to circumvent these fundamental material limitations by splitting the pulse energy and spectrum into small packages that can be handled by individual crystals to push laser technology to the next level. Commercial state of the art laser systems deliver ultrashort pulses consisting of many cycles of the electromagnetic field underneath the overall envelope. Two patents have been launched by INRS-EMT researchers to shorten this duration down to one optical cycle (and even below). The goal of this Strategic project is to develop those corresponding devices to establish a world class beamline at the Advanced Laser Light Source, delivering high energy sub-cycle pulses. Because the generation of these sub-cycle pulses requires their complete temporal characterization, we also propose a suitable technology for this. These results will redefine the state of the art in ultrafast laser technology, placing Canada in a position of international leadership. Associated with such short pulses is an octave exceeding spectral bandwidth with many other applications by itself and we will realize these new type of lasers in the mid-infrared (3 to 5 microns); a window of the electromagnetic spectra of increasing significance for defence technology as a counter measure to protect airplanes from missiles. Therefore, Defence Research and Development Canada is a partner in this Strategic project.

今天的工业和科学激光器在光学材料的物理极限下工作，以达到高能量或短脉冲持续时间等极端性能。通常，放大发生在激光晶体中，并且受到材料损伤阈值以及晶体可以接受的光谱带宽的限制。我们建议通过将脉冲能量和光谱分成可以由单个晶体处理的小包装来规避这些基本材料限制，以将激光技术推向下一个水平。现有技术的商业激光系统在整个包络下递送由电磁场的许多周期组成的超短脉冲。INRS-EMT研究人员已经推出了两项专利，将这一持续时间缩短到一个光学周期（甚至更低）。该战略项目的目标是开发相应的设备，在先进激光光源上建立世界级的光束线，提供高能量的子周期脉冲。由于这些子周期脉冲的产生需要其完整的时间特性，我们也提出了一个合适的技术。这些成果将重新定义超快激光技术的最新发展，使加拿大处于国际领先地位。与这种短脉冲相关的是一个倍频程，它本身就超过了许多其他应用的光谱带宽，我们将在中红外（3至5微米）实现这些新型激光器;作为保护飞机免受导弹攻击的对策，这是一个对国防技术越来越重要的电磁光谱窗口。因此，加拿大国防研究与发展部是这一战略项目的合作伙伴。