FEL2012 - List of Authors (Yamada, K.)

Paper	Title	Page
WEPD47	Development of Free-electron Lasers using Two "Higher Orders" with the Storage Ring NIJI-IV	476
	N. Sei, H. Ogawa, K. Yamada AIST, Tsukuba, Ibaraki, Japan
	Funding: This work was supported by the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science and Technology of Japan. In National Institute of Advanced Industrial Science and Technology (AIST), higher harmonic oscillations of free-electron lasers (FELs) have been developed with the storage ring NIJI-IV. We have already achieved the seventh harmonic FEL at a wavelength of around 890 nm, which is the highest order in the harmonic FELs. Using another "higher order", that is, higher diffraction orders of a target wavelength of dielectric multilayer mirrors, we realized the following results: + shortening a wavelength of the FEL oscillation in the NIJI-IV IR-FEL system, + lasing on the highest order in the harmonic FEL, + discovering differences between the fundamental harmonic FEL and higher harmonic FEL, + controlling the harmonic order in the same condition of the electron beam and insertion device. In the presentation, we will report the characteristics of the FEL oscillations using the two higher orders in the NIJI-IV IR-FEL system. E-mail address: sei.n@aist.go.jp N. Sei et al., J. Phys. Soc. Jpn., 79 (2010) 093501. ** N. Sei et al., Opt. Express, 20 (2012) 308.

Paper

Title

Page

Development of Free-electron Lasers using Two "Higher Orders" with the Storage Ring NIJI-IV

476

N. Sei, H. Ogawa, K. Yamada
AIST, Tsukuba, Ibaraki, Japan

Funding: This work was supported by the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science and Technology of Japan.
In National Institute of Advanced Industrial Science and Technology (AIST), higher harmonic oscillations of free-electron lasers (FELs) have been developed with the storage ring NIJI-IV*. We have already achieved the seventh harmonic FEL at a wavelength of around 890 nm, which is the highest order in the harmonic FELs**. Using another "higher order", that is, higher diffraction orders of a target wavelength of dielectric multilayer mirrors, we realized the following results: + shortening a wavelength of the FEL oscillation in the NIJI-IV IR-FEL system, + lasing on the highest order in the harmonic FEL, + discovering differences between the fundamental harmonic FEL and higher harmonic FEL, + controlling the harmonic order in the same condition of the electron beam and insertion device. In the presentation, we will report the characteristics of the FEL oscillations using the two higher orders in the NIJI-IV IR-FEL system.
E-mail address: sei.n@aist.go.jp
* N. Sei et al., J. Phys. Soc. Jpn., 79 (2010) 093501.
** N. Sei et al., Opt. Express, 20 (2012) 308.