@article{oai:repo.qst.go.jp:00045748,
 author = {Ogawa, Takayo and Kawasaki, Yoshiya and Takizawa, Yoshiyuki and Ebisuzaki, Toshikazu and Sakaki, Naoto and Higuchi, Mikio and Uchihori, Yukio and Kitamura, Hisashi and Wada, Satoshi and 川崎 賀也 and 内堀 幸夫 and 北村 尚},
 issue = {8 Issue 1},
 journal = {Japanese Journal of Applied Physics},
 month = {Aug},
 note = {The radiation resistance of Nd-doped laser crystals was measured using a proton beam in order to construct spaceborne laser systems. After irradiation of 30 krad, we measured the variation of transmittance for crystals. The variation for all crystals was less than 1%. Since 30 krad is the irradiation value received over 30 years in the International Space Station with a 1-mm-thick Al cover, we conclude that all of the laser crystals have sufficient resistance for a 3-year spaceborne lidar mission at the International Space Station.},
 pages = {088001-1--088001-2},
 title = {Radiation resistance of Nd-doped laser crystals for space application},
 volume = {48},
 year = {2009}
}