Chirped pulse upconversion for femtosecond mid-infrared spectroscopy at 100 kHz

Mindaugas Jonušas; Quentin Bournet; Adeline Bonvalet; Michele Natile; Florent Guichard; Yoann Zaouter; Patrick Georges; Frederic Druon; Marc Hanna; Manuel Joffre

doi:10.1364/OE.515291

Chirped pulse upconversion for femtosecond mid-infrared spectroscopy at 100 kHz

Mindaugas Jonušas
, Quentin Bournet
, Adeline Bonvalet
, Michele Natile
, Florent Guichard
, Yoann Zaouter
, Patrick Georges
, Frederic Druon
, Marc Hanna
, Manuel Joffre

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate that chirped pulse up-conversion (CPU), a method routinely used with systems based on 1-kHz Titanium:Sapphire lasers, can be extended to a repetition rate of 100 kHz with an Ytterbium diode-pumped femtosecond amplifier. Individual mid-infrared spectra can thus be measured directly in the near infrared using a fast CMOS linescan camera. After an appropriate Fourier processing, a spectral resolution of 1.1 cm-1 is reported, currently limited by our spectrometer. Additionally, we demonstrate the application of CPU to a pumpprobe measurement of the vibrational relaxation in carboxy-hemoglobin, and we show that the combination of fast scanning and fast acquisition enables a straightforward removal of pump scattering interference.

Original language	English
Pages (from-to)	8020-8029
Number of pages	10
Journal	Optics Express
Volume	32
Issue number	5
DOIs	https://doi.org/10.1364/OE.515291
Publication status	Published - 26 Feb 2024

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title = "Chirped pulse upconversion for femtosecond mid-infrared spectroscopy at 100 kHz",

abstract = "We demonstrate that chirped pulse up-conversion (CPU), a method routinely used with systems based on 1-kHz Titanium:Sapphire lasers, can be extended to a repetition rate of 100 kHz with an Ytterbium diode-pumped femtosecond amplifier. Individual mid-infrared spectra can thus be measured directly in the near infrared using a fast CMOS linescan camera. After an appropriate Fourier processing, a spectral resolution of 1.1 cm-1 is reported, currently limited by our spectrometer. Additionally, we demonstrate the application of CPU to a pumpprobe measurement of the vibrational relaxation in carboxy-hemoglobin, and we show that the combination of fast scanning and fast acquisition enables a straightforward removal of pump scattering interference.",

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AU - Jonušas, Mindaugas

AU - Bournet, Quentin

AU - Bonvalet, Adeline

AU - Natile, Michele

AU - Guichard, Florent

AU - Zaouter, Yoann

AU - Georges, Patrick

AU - Druon, Frederic

AU - Hanna, Marc

AU - Joffre, Manuel

PY - 2024/2/26

Y1 - 2024/2/26

N2 - We demonstrate that chirped pulse up-conversion (CPU), a method routinely used with systems based on 1-kHz Titanium:Sapphire lasers, can be extended to a repetition rate of 100 kHz with an Ytterbium diode-pumped femtosecond amplifier. Individual mid-infrared spectra can thus be measured directly in the near infrared using a fast CMOS linescan camera. After an appropriate Fourier processing, a spectral resolution of 1.1 cm-1 is reported, currently limited by our spectrometer. Additionally, we demonstrate the application of CPU to a pumpprobe measurement of the vibrational relaxation in carboxy-hemoglobin, and we show that the combination of fast scanning and fast acquisition enables a straightforward removal of pump scattering interference.

AB - We demonstrate that chirped pulse up-conversion (CPU), a method routinely used with systems based on 1-kHz Titanium:Sapphire lasers, can be extended to a repetition rate of 100 kHz with an Ytterbium diode-pumped femtosecond amplifier. Individual mid-infrared spectra can thus be measured directly in the near infrared using a fast CMOS linescan camera. After an appropriate Fourier processing, a spectral resolution of 1.1 cm-1 is reported, currently limited by our spectrometer. Additionally, we demonstrate the application of CPU to a pumpprobe measurement of the vibrational relaxation in carboxy-hemoglobin, and we show that the combination of fast scanning and fast acquisition enables a straightforward removal of pump scattering interference.

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VL - 32

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JO - Optics Express

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IS - 5

ER -

Chirped pulse upconversion for femtosecond mid-infrared spectroscopy at 100 kHz

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