Generation of mid-infrared pulses by X(3) difference frequency generation in CaF(2) and BaF(2).
Tunable mid-IR pulses in the range 1300-4200 cm(-1) (7.7-2.4 microm) are generated through a phase-matched four-wave mixing process in ordinary mid-IR window materials such as CaF(2) and BaF(2) . In this process the difference frequency v(3)=2v(2)-v(1) is generated from pump fields v(1) and v(2) . The process can be phase matched to different frequencies by adjustment of the angle between the pump fields.
Nienhuys
H K
HK
Planken
P C
PC
van Santen
R A
RA
Bakker
H J
HJ