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Appl. Sci. 2016, 6(5), 136; doi:10.3390/app6050136

A Simple Method for the Evaluation of the Pulse Width of an Ultraviolet Femtosecond Laser Used in Two-Photon Ionization Mass Spectrometry

1
Laboratory of Chemistry, Graduate School of Design, Kyushu University, Fukuoka 815-8540, Japan
2
Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
3
Division of Optoelectronics and Photonics, Center for Future Chemistry, Kyushu University, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Takayoshi Kobayashi
Received: 21 March 2016 / Accepted: 29 April 2016 / Published: 6 May 2016
View Full-Text   |   Download PDF [1083 KB, uploaded 6 May 2016]   |  

Abstract

A simple method was proposed for on-site evaluation of the pulse width of an ultraviolet femtosecond laser coupled with a mass spectrometer. This technique was based on measurement of a two-photon ionization signal in mass spectrometry by translation of the prism in the pulse compressor of the femtosecond laser. The method was applied to optical pulses that were emitted at wavelengths of 267, 241, and 219 nm; the latter two pulses were generated by four-wave Raman mixing using the third harmonic emission of a Ti:sapphire laser (267 nm) in hydrogen gas. The measurement results show that this approach is useful for evaluation of the pulse width of the ultraviolet femtosecond laser used in mass spectrometry for trace analysis of organic compounds. View Full-Text
Keywords: pulse width; mass spectrometry; ionization; ultraviolet femtosecond laser pulse width; mass spectrometry; ionization; ultraviolet femtosecond laser
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Imasaka, T.; Hamachi, A.; Okuno, T.; Imasaka, T. A Simple Method for the Evaluation of the Pulse Width of an Ultraviolet Femtosecond Laser Used in Two-Photon Ionization Mass Spectrometry. Appl. Sci. 2016, 6, 136.

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