L-Histidine tetrafluoroborate: a solution-grown semiorganic crystal for nonlinear frequency conversion.
The crystal structure, refractive indices, and phase-matching conditions for a new nonlinear optical material, L-histidine tetrafluoroborate (HFB), are reported. HFB grows readily, displays favorable mechanical characteristics, and has adequate birefringence to permit phase-matched parametric processes over much of its transparency range (250 nm to 1300 nm). The phase-matching loci and angular sensitivity for second-harmonic generation of 1064-nm light in single crystals of HFB were measured. The effective nonlinearity for HFB is comparable with that of beta-barium borate (~2 pm/V), and its angular sensitivity [delta(Deltak)/deltatheta] is somewhat smaller.
H O
HO
Marcy
M J
MJ
Rosker
L F
LF
Warren
P H
PH
Cunningham
C A
CA
Thomas
L A
LA
Deloach
S P
SP
Velsko
C A
CA
Ebbers
J H
JH
Liao
M G
MG
Kanatzidis