Free electron laser (FEL (KU-FEL))

Model

FEL（KU-FEL）

Manufacturer

⼤電⼒⾼周波増幅器（⽇新電気、NKM-150K、NKM250K）、熱陰極型⾼周波電⼦銃(AET、GP-500)

Specification

ree 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.

Location

Institute of Advanced Energy North Building 4

Installation Year

2000

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Overview

ree 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.

Responsible department

Installation Location 57 North Building 4

Available Users

Kyoto University,Other Research,Companies, etc. Institutes,Collaborative investigation

Notes

Any person who intends to use the facilities (hereinafter referred to as the “Applicant”) must submit the “Kyoto University Institute of Advanced Energy Facility Use Application Form (Form 1)” (hereinafter referred to as the “Application Form”) to the Director and obtain approval no earlier than one year and no later than seven days prior to the intended date of use (or the first day of use if the period covers multiple consecutive days).

Usage rules

Regulations for Facility Usage, Institute of Advanced Energy, Kyoto University

https://center-test.iae.kyoto-u.ac.jp/wp-content/uploads/2026/03/kikiyoukou.pdf

Equipment Fee

https://center-test.iae.kyoto-u.ac.jp/wp-content/uploads/2026/03/ryoukin.pdf

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.

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