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Updated: Jun 10, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Picosecond time-resolved vibrational spectroscopy using a regenerative amplifier.

T M Jedju, M W Roberson, L Rothberg

|August 21, 2010

Summary

We developed a new apparatus for transient infrared spectroscopy, achieving 5-picosecond resolution. This tool enables detailed studies of rapid molecular events, like ligand photodissociation in carboxymyoglobin.

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Last Updated: Jun 10, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Published on: July 12, 2017

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems

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Published on: August 6, 2018

Area of Science:

Physical Chemistry
Spectroscopy
Biophysics

Background:

Transient infrared spectroscopy is crucial for studying ultrafast molecular dynamics.
Previous methods lacked the resolution to capture rapid chemical events.
Understanding photodissociation mechanisms requires high temporal resolution.

Purpose of the Study:

To demonstrate and characterize a novel apparatus for transient infrared spectroscopy.
To achieve a temporal resolution of 5 picoseconds.
To enable sensitive measurements of spectral changes.

Main Methods:

Utilized a pulsed Nd:YAG regenerative amplifier operating at 540 Hz.
Employed a visible pump and a narrow-band mid-infrared probe.
Measured transient spectra in the 1770-2250 cm(-1) range with 1 cm(-1) resolution.

Main Results:

Achieved 5-picosecond resolution for transient infrared spectroscopy.
Demonstrated sensitivity to absorbance changes as low as 1 x 10(-3).
Successfully measured transient spectra with high spectral resolution.

Conclusions:

The developed apparatus provides unprecedented temporal resolution for infrared spectroscopy.
This tool is suitable for investigating fast photodissociation processes.
Ligand photodissociation from carboxymyoglobin was studied as a key application.