Open AccessEnergy transfer efficiency from Cr^3+ to Nd^3+ in solar-pumped laser using transparent Nd/Cr:Y_3Al_5O_12 ceramics
Author(s) -
Kazuo Hasegawa,
Tadashi Ichikawa,
Shintaro Mizuno,
Yasuhiko Takeda,
Hiroshi Itô,
Akio Ikesue,
Motohiro Tagaya,
M. Yamaga
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.00a519
Subject(s) - laser , materials science , optics , slope efficiency , neodymium , oscillation (cell signaling) , laser pumping , absorption (acoustics) , energy conversion efficiency , laser power scaling , optoelectronics , fiber laser , physics , biology , genetics
We report energy transfer efficiency from Cr 3+ to Nd 3+ in Nd (1.0 at.%)/Cr (0.4 at.%) co-doped Y 3 Al 5 O 12 (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 Nd 3+ directly to create the 1064 nm laser oscillation, whereas the latter assists the performance via Cr 3+ absorption and sequential energy transfer to Nd 3+ . 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 Nd 3+ emission.