Free electron laser (FEL (KU-FEL))

Free electron lasers use light emitted by an electron beam accelerated to near the speed of light in a vacuum. Generally, it has the characteristic of producing high-intensity monochromatic light with a continuously variable wavelength.
The Institute of Advanced Energy uses an electron source called a hot cathode high-frequency electron gun to generate electron beams, aiming to create a small, high-performance device that can be used in a laboratory.
For the first time in the world, we overcame the problem of operational instability with this method by precisely controlling the high-frequency power input to the electron gun, and in 2008 we succeeded in oscillating a laser at a wavelength of 12.4 μm.
As of January 2020, we provide wavelength-tunable and powerful laser light in the mid-infrared region of 3.4 to 26 μm for joint research.
The mid-infrared region, which this device can generate, contains many vibrational excitation levels for molecules, so the mid-infrared region is also called the molecular fingerprint region.
It is possible to conduct selective excitation experiments by adjusting the laser wavelength to the vibrational excitation level of molecules. Pump-probe experiments can also be performed with free electron lasers and synchronized nanosecond and picosecond Nd: YAG lasers.
It is also possible to carry out experiments to investigate the emission of light from crystalline materials when hit by electron beam irradiation (maximum energy 40 MeV) or a single high-energy (2-40 MeV) electron using an electron accelerator for free electron laser generation.

Installation Location

57 Installation Location 57 North Building 2

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User Guide

Kyoto University

Collaborative investigation

Other Research Institutes

Collaborative investigation

Companies, etc.

Collaborative investigation

Collaborative investigation: 利用者は機器管理者と共同研究を行う必要があります。
（公募申し込み前に事前相談可能）

User Guide

The Joint Usage/Research Center for Zero Emission Energy Research
※ For details on how to apply, please refer to the device's website.
http://www.iae.kyoto-u.ac.jp/zero_emission/summary/application.html

Inquiries

Advanced Energy Generation Division Quantum Radiation Energy Research Section（Contact:Zen）

TEL: 0774-38-3424
MAIL: zen＊iae.kyoto-u.ac.jp
Please change 「＊」 to 「@」 and send.