TY - JOUR
T1 - Temperature-dependent evaluation of Nd:LiCAF optical properties as potential vacuum ultraviolet laser material
AU - Minami, Yuki
AU - Arita, Ren
AU - Cadatal-Raduban, Marilou
AU - Pham, Minh Hong
AU - Empizo, Melvin John Fernandez
AU - Luong, Mui Viet
AU - Hori, Tatsuhiro
AU - Takabatake, Masahiro
AU - Fukuda, Kazuhito
AU - Mori, Kazuyuki
AU - Yamanoi, Kohei
AU - Shimizu, Toshihiko
AU - Sarukura, Nobuhiko
AU - Fukuda, Kentaro
AU - Kawaguchi, Noriaki
AU - Yokota, Yuui
AU - Yoshikawa, Akira
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - We investigate the temperature-dependent optical properties of Nd3+-doped LiCaAlF6 (Nd:LiCAF) in the vacuum ultraviolet (VUV) region. The 172-nm absorption edge does not seem to experience any significant blue shift as temperature is decreased from room temperature down to 30 K. This is confirmed by excitation spectra for the same temperature range. Several energy levels in the excited state configuration are observed. Based on these energy levels, the dominant emission peak at 177 nm is assigned to the allowed dipole transition from the 4f25d configuration of Nd3+ and the 4I11/2 level of the 4f3 ground state configuration. The position of the dominant 177-nm emission peak appears to be fixed across the temperature range considered. Our results suggest that the spectral overlap between the excitation and emission spectra should not increase as temperature is raised, possibly making Nd:LiCAF a potential VUV laser gain medium operating at room temperature.
AB - We investigate the temperature-dependent optical properties of Nd3+-doped LiCaAlF6 (Nd:LiCAF) in the vacuum ultraviolet (VUV) region. The 172-nm absorption edge does not seem to experience any significant blue shift as temperature is decreased from room temperature down to 30 K. This is confirmed by excitation spectra for the same temperature range. Several energy levels in the excited state configuration are observed. Based on these energy levels, the dominant emission peak at 177 nm is assigned to the allowed dipole transition from the 4f25d configuration of Nd3+ and the 4I11/2 level of the 4f3 ground state configuration. The position of the dominant 177-nm emission peak appears to be fixed across the temperature range considered. Our results suggest that the spectral overlap between the excitation and emission spectra should not increase as temperature is raised, possibly making Nd:LiCAF a potential VUV laser gain medium operating at room temperature.
KW - Fluoride
KW - Laser gain medium
KW - Temperature-dependent evaluation
KW - Vacuum ultraviolet spectroscopy
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U2 - 10.1016/j.optmat.2016.05.011
DO - 10.1016/j.optmat.2016.05.011
M3 - Article
AN - SCOPUS:84967019309
VL - 58
SP - 5
EP - 8
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
ER -