High-Energy Molecular Lasers pp 421-424 | Cite as
Subtraction of the CO2 Laser Radiation Frequencies in a ZnGeP2 Crystal
Abstract
Nonlinear conversion of various combinations of the laser lines resulted in generation of FIR radiations at different frequencies that corresponded to the wavelengths λ = 102.60, 106.58, 108.79, 110.76 pm. The energy of the FIR radiation pulses was 180 ± 100 nJ, which corresponded to a power of 1.8 ± 1.00 W when the FIR pulse duration was 100 ns. The discrepancy between the calculated and measured energies of the FIR pulses was primarily due to the losses resulting from mismatch between the dimensions of the crystal and the laser beam cross section. The results of this chapter allow recommendation of ZnGeP2 as an efficient nonlinear crystal for the generation of FIR radiation without recourse to cryogenic temperatures or magnetic fields. The FIR radiation power in excess of 1 W shows that it should be possible to construct an FIR tunable pulse-periodic source on the basis of a ZnGeP2 crystal and characterized by a high output power.
Keywords
Cryogenic Temperature High Output Power Radiation Energy Density Nonlinear Conversion Laser Radiation FrequencyReferences
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