Stromberg Christopher J, Hadler Joshua A, Alberding Brian G, Heilweil Edwin J
Department of Chemistry and Physics, Hood College, 401 Rosemont Ave., Frederick, MD 20701 USA.
Applied Physics Division, Physical Measurement Laboratory, NIST Boulder, CO 80305 USA.
J Laser Appl. 2017 Nov;29(4). doi: 10.2351/1.5004090.
Ultrafast laser systems are becoming more widespread throughout the research and industrial communities yet eye protection for these high power, bright pulsed sources still require scrupulous characterization and testing before use. Femtosecond lasers, with pulses naturally possessing broad-bandwidth and high average power with variable repetition rate, can exhibit spectral side-bands and subtly changing center wavelengths, which may unknowingly affect eyewear safety protection. Pulse spectral characterization and power diagnostics are presented for a 80 MHz, Ti:Sapphire, ≈ 800 nm, ≈40 femtosecond oscillator system. Power and spectral transmission for 22 test samples are measured to determine whether they fall within manufacturer specifications.
超快激光系统在研究和工业领域正变得越来越普遍，但对于这些高功率、明亮脉冲源的眼部防护，在使用前仍需要进行严格的表征和测试。飞秒激光器的脉冲天然具有宽带宽、高平均功率和可变重复率，可能会出现光谱边带和中心波长的细微变化，这可能在不知不觉中影响眼镜的安全防护。本文介绍了一个80兆赫兹、钛宝石、波长约800纳米、脉宽约40飞秒的振荡器系统的脉冲光谱表征和功率诊断。测量了22个测试样品的功率和光谱透射率，以确定它们是否符合制造商的规格。
