First lasings at visible and IR range of linac-based FELs at the FELI

Tomimasu, T.; Oshita, E.; Okuma, S.; Wakita, K.; Saeki, Kazuhiko; Zako, A.; Suzuki, Toshiji; Miyauchi, Y.; Koga, A.; Nishihara, Sadamitsu; Nagai, Akio; Tongu, E.; Wakisaka, Kenichiro; Kobayashi, Akira; Yasumoto, M.

doi:10.1109/pac.1995.504628

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…Recently, a linac-driven free electron laser ͑FEL͒ system covering a wide range of spectrum from ultraviolet to farinfrared has been developed at Free Electron Laser Research Institute, Inc. 10 The FEL has several attractive features including its ultra-short pulse and high peak power operation keeping the average power low, and the wide tunability of the lasing wavelength. In this letter, we report the picosecond-range all-optical modulation by using the FEL for the ISB-resonant light, which has become successful owing to the above-mentioned features of the FEL.…”

mentioning

confidence: 99%

Observation of ultrafast all-optical modulation based on intersubband transition in n-doped quantum wells by using free electron laser

Suzuki

Mitsuyu

Nishi

et al. 1996

Applied Physics Letters

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confidence: 99%

Observation of ultrafast all-optical modulation based on intersubband transition in n-doped quantum wells by using free electron laser

Suzuki

Mitsuyu

Nishi

et al. 1996

Applied Physics Letters

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“…Then, UV-VUV FEL oscillators [23][24][25][26][27][28][29][30] were actively developed and studied, with short wavelength achievements [31,32]. In the path towards the control of FEL properties, linewidth narrowing has been performed with a Fabry-Perot etalon [33] and possible handling of the temporal structure was carried out [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Strategies towards a compact XUV free electron laser adopted for the LUNEX5 project

Couprie

Labat

Évain

et al. 2015

Journal of Modern Optics

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More than 50 years after the laser discovery, X-ray free electron lasers (FEL), the first powerful tuneable, short pulse lasers in the X-ray spectral range, are now blooming in the world, enabling new discoveries on the ultra-fast dynamics of excited systems and imaging. LUNEX5 demonstrator project aims at investigating paths towards advanced and compact FELs. Two strategies are adopted. The first one concerns the FEL line where seeding and echo harmonic generation are implemented together with compact cryogenic in-vacuum undulators. In the second one, the electron beam is no longer provided by a conventional linear accelerator but by a laser plasma process, while a necessary particular electron beam manipulation is required to handle the electron properties to enable FEL amplification.

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“…[1][2][3] High-density photons excite the vibrations of molecules or atoms step by step earlier than before the relaxation of the excited vibrations can take place. Accordingly, it is possible that a FEL can cause some interesting phenomena such as infrared multiphoton dissociation.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of an attenuation system for an infrared free-electron laser

Awazu

Fukami

2001

Review of Scientific Instruments

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This study concerns the attenuation of the incident power from a free-electron laser ͑FEL͒ in steps of up to two orders of magnitude, while maintaining optical beam geometry. We have developed and evaluated the properties of a FEL attenuation filter system, which can be attached and detached, with the position of the focusing lens and the target sample fixed. As a result, we have established that our FEL attenuation filter system enables two orders of magnitude of power control for infrared wavelengths between 5.5 and 6.5 m. We conclude that the attenuation system is extremely useful for various FEL applications.

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First lasings at visible and IR range of linac-based FELs at the FELI

Cited by 3 publications

References 9 publications

Observation of ultrafast all-optical modulation based on intersubband transition in n-doped quantum wells by using free electron laser

Observation of ultrafast all-optical modulation based on intersubband transition in n-doped quantum wells by using free electron laser

Strategies towards a compact XUV free electron laser adopted for the LUNEX5 project

Evaluation of an attenuation system for an infrared free-electron laser

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