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two–10.eight-µm wavelength region. A different significant limitation of the pump electricity connected by using a thermal lensing influence in crystal was resolute experimentally. A comparison was made of AgGaSe2 and ZnGeP2 crystals as elements ideal for the efficient technology of the 2nd harmonic of cw CO2 laser radiation.
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A further application of the set up is seeding significant-stress CO2-laser amplifier [seventeen]. It should be noted that presented setup of the mid-IR laser technique is pretty straightforward and has an incredible prospective for Electrical power scalability. Power on the entrance-conclude Ti:sapphire laser can be improved nearly numerous Joules [twelve], having said that that pump laser will require a wide-aperture BGGSe crystal sample. Also, the DFG pulse Electricity is usually improved by an enhancement of sign pulse�?uniform spectrum form and elevated Power.
We create superior-get harmonics from crystalline solids using a tunable mid-IR OPA with 50 kHz repetition level. Applying nonlinear self-compression in YAG crystals, we generate sub a few-cycle pulses at three.eight μm wavelength for high harmonic spectroscopy. Browse extra
New Center infrared nonlinear optical crystals of BaGa2GeX6(X=S, Se) are actually synthesized. The structures of equally BaGa2GeS6 and BaGa2GeSe6 ended up uncovered to become isomorphous exhibiting A more info 3-dimensional framework constructed through the parallel alignment of Ga or Ge tetrahedron teams alongside the c-aix. The ultraviolet transmittance spectrum suggests the small-wavelength absorption edges of BaGa2GeS6 and BaGa2GeSe6 are 380 nm and 440 nm, respectively.
A thermo-optic dispersion system for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e six nonlinear crystal is documented. The experimentally established temperature-dependent stage-matching situations for next-harmonic and sum-frequency era of Nd:YAG laser-pumped KTiOPO4 rm KTiOPO _4 K T i O P O 4 (KTP) and RbTiOAsO4 rm RbTiOAsO _4 R b T i O A s O 4 (RTA) optical parametric oscillators in addition to a CO2 rm CO _2 C O 2 laser and its harmonics within the 0.
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Laser-induced destruction threshold in the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm within the nanosecond regime
Particular emphasis might be supplied to the current technical constraints and availability of pump laser traits and nonlinear crystal Qualities. Browse much more
The habits of dislocations in the interfacial area involving the epitaxial layer grown through the liquid section as well as the substrate of GaAs is investigated. Observations of dislocations lying together the 〈110�?directions ended up performed utilizing an optical microscope soon after shallow etching that has a new chemical etchant.
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It really is revealed there are wavelength mixtures at which the powerful nonlinearity coefficient differs only slightly in a wide frequency band.
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