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

基本信息

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

项目摘要

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.

2019 年超快激光器市场价值为 4.21B 美元，预计到 2025 年将达到 16B 美元。由于超快激光器市场正在快速增长，对其表征的诊断将变得同样重要。其中，能够检索其脉冲持续时间的光谱仪和设备是绝对必要的。这很容易理解，因为激光脉冲的时间分布是由它们的光谱和光谱相位定义的。为了优化并获得最短的脉冲持续时间，拥有测量光谱和光谱相位的设备是绝对必要的。虽然在可见光和近红外光谱范围内存在许多用于超短激光脉冲诊断的技术并且可以在商业上使用，但对于红外和中红外范围的技术尚未广泛使用。近年来，INRS 研究人员与学术界和工业界合作者开发了两种用于红外和中红外超短脉冲诊断的技术。第一项技术是基于多光子吸收的光谱仪，与现有技术相比，有可能提供用于红外激光器光谱表征的低成本设备，并具有更高的灵敏度和光谱分辨率。对此将与 Few-cycle Inc. 进行密切研究。第二种技术 FROSt 能够表征从可见光到中红外的脉冲，并且无需相位匹配。因此，FROSt 非常适合表征能够产生单周期持续时间的倍频程激光脉冲。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波包络相位 (CEP)。 INRS 研究人员开发了第三种技术来表征 CEP 的激光逐次波动。对于第二项和第三项技术，INRS研究人员在双方合作伙伴的支持下，将通过研究单周期脉冲的生成和表征以及高重复率下CEP的跟踪来将其推向极限。在该项目结束时，我们的技术将达到更高的 TRL（从 3 到 6），从而能够将其转让给包括我们的工业合作伙伴在内的加拿大公司。