Novel diagnostics for the characterization of ultrashort laser pulses

用于表征超短激光脉冲的新型诊断方法

• 批准号: 550317-2020
• 负责人: Légaré, François
• 金额: $ 8.74万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=701673
• 关键词: Novel; diagnostics; characterization; ultrashort; laser

The market for ultrafast lasers was representing a value of 4.21B US$ in 2019 and is expected to reach 16B$ by 2025. Since the market for ultrafast lasers is rapidly growing, diagnostics for their characterization will become equally important. Among them, spectrometers and devices capable to retrieve their pulse duration are absolutely essential. This can be easily understood by the fact that the temporal profile of laser pulses is defined by their spectra and spectral phase. To optimize and to get the shortest pulse duration, it is absolutely essential to have devices to measure the spectra and the spectral phase. While in the visible and near infrared spectral range many technologies for the diagnostics of ultrashort laser pulses exist and are available commercially, technologies are not widely available for the IR and mid-IR range. Over the recent years, INRS researchers with academic and industrial collaborators have developed two technologies for the diagnostics of IR and mid-IR ultrashort pulses. The first technology is a spectrometer based on multiphoton absorption and bears the potential to provide low cost devices for spectral characterization of IR lasers with improved sensitivity and spectral resolution compared to current technologies. This will be investigated closely with few-cycle Inc. The second technology, FROSt, is capable to characterize pulses from the visible to the mid-IR and is free of phase matching. Therefore, FROSt is ideal to characterize octave spanning laser pulses capable to produce single-cycle duration. For single-cycle pulses, another important parameter to define their temporal structure is their carrier envelope phase (CEP). INRS researchers have developed a third technology to characterize laser shot-to-shot fluctuations of the CEP. For the second and third technology, INRS researchers with support of both partners will push them to their limit by investigating the generation and characterization of single-cycle pulses and the tracking of CEP at high repetition rate. At the end of this project, our technologies will reach a much higher TRL (from 3 to 6) thus enabling their transfers to Canadian companies including our industrial partners.

超快激光器的市场在2019年的价值为4.21b us $，预计到2025年将达到16b $。由于超快激光器的市场正在迅速增长，因此其表征的诊断将变得同样重要。其中，能够检索其脉搏持续时间的光谱仪和设备绝对必不可少。这可以通过激光脉冲的时间曲线由它们的光谱和光谱阶段定义的事实很容易理解。为了优化和获得最短的脉冲持续时间，拥有测量光谱和光谱阶段的设备绝对必不可少。尽管在可见的和近红外光谱范围内，许多用于超舒服激光脉冲诊断的技术存在并且在商业上可用，但技术并未在IR和MID-IR范围内广泛使用。 近年来，拥有学术和工业合作者的INRS研究人员开发了两种技术，用于IR和MID-IR Ultrashort脉冲的诊断。第一技术是基于多光子吸收的光谱仪，并且与当前技术相比，具有提高灵敏度和光谱分辨率的IR激光器的光谱表征的低成本设备具有潜力。这将与几个循环公司进行密切调查。第二种技术，即弗罗斯特（Frost），能够表征从可见光到MID-IR的脉冲，并且没有相位匹配。因此，霜非常适合表征跨越激光脉冲能够产生单周期持续时间的八度脉冲。对于单周期脉冲，定义其时间结构的另一个重要参数是其载体包络相（CEP）。 INRS研究人员开发了第三种技术，可以表征CEP的激光射击波动。对于第二和第三种技术，在两个合作伙伴的支持下，INRS的研究人员将通过研究单周期脉冲的产生和表征以及以高重复速率跟踪CEP来将其推向极限。在该项目结束时，我们的技术将达到更高的TRL（从3到6），从而使他们可以转移到包括我们的工业合作伙伴在内的加拿大公司。