title: Energy transfer efficiency from Cr(3+) to Nd(3+) in solar-pumped laser using transparent Nd/Cr:Y(3)Al(5)O(12) ceramics.
abstract: We report energy transfer efficiency from Cr3+to Nd3+in Nd (1.0 at.%)/Cr (0.4 at.%) co-doped Y3Al5O12(YAG) transparent ceramics in the laser oscillation states. The laser oscillation has performed using two pumping lasers operating at 808 nm and 561 nm; the former pumps Nd3+directly to create the 1064 nm laser oscillation, whereas the latter assists the performance via Cr3+absorption and sequential energy transfer to Nd3+. From the laser output power properties and laser mode analysis, the energy transfer efficiency was determined to be around 65%, which is close to that obtained from the spontaneous Nd3+emission.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Hasegawa
authors.forename: Tadashi
authors.initials: T
authors.lastname: Ichikawa
authors.forename: Shintaro
authors.initials: S
authors.lastname: Mizuno
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Takeda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ito
authors.forename: Akio
authors.initials: A
authors.lastname: Ikesue
authors.forename: Tomoyoshi
authors.initials: T
authors.lastname: Motohiro
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Yamaga