Quantum efficiency of technical metal photocathodes under laser irradiation of various wavelengths
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Laser induced photolytic and pyrolytic deposition spots on silicon are studied for different laser powers, partial pressure and deposition time. In the photolytic case at low powers, the reaction takes place in the adsorbed phase on the surface, whereas at ...
An argon laser is used to induce Laser Chem. Vapor Deposition (LCVD) of platinum using platinum bihexafluoroacetylacetonate as precursor. The process can be photolytic or pyrolytic depending on the laser power used. These processes are studied by recording ...
New cascade laser transitions of (CH2F2)C-12 at 172.50-mu-m, 208.83-mu-m, 220.44-mu-m, 223.99-mu-m and 250.61-mu-m are reported. A waveguide FIR laser was pumped with a quasi cw (CO2)-C-12-O-16 laser operating on the 9R32 line. Together with the already kn ...
The abs. photodissocn. yield of H2O was measured in Ar matrixes at 160 nm. This energy was chosen as it corresponds to the max. of the photodissocn. yield curve. The abs. quantum efficiency is given by h = NOH/n(160 nm), where NOH is the no. of OH mols. pr ...
SF6 in a free jet was vibrationally excited by a continuous-wave CO2 laser. The subsequent energy transfer processes, in which vibrational energy is degraded, lead to changes in the beam's spatial, velocity and cluster-size distributions. These changes wer ...
The feasibility of a new, 2-laser, isotope sepn. scheme was tested. The 1st laser induces isotopically selective condensation in the collisional region of a free jet of SF6 dild. in Ar. Thus, a mol. beam contg. non-clustered 32SF6 and clustered 34SF6{m}Ar{ ...
A mol. beam mass spectrometer was constructed to study the formation of van der Waals clusters over a wide mass range. Using this app. (SF6)m was detected with 1 ? m ? 100 in the adiabatic expansion of SF6. By irradiating the SF6 jet with a continuous-wave ...
A new luminescence band is observed in optically pumped Ge-doped (Al,Ga)As multilayer structures, that were previously subjected to laser irradiation. The band is shifted by 90 meV to longer wavelength with respect to the luminescence peak of the unexposed ...
The speckle pattern in the image of a diffusely scattering plane surface illuminated by two mutually inclined quasi plane waves split from a common laser source gives a direct display of the coherence properties of that light source. This can be used as a ...
The laser-induced pyrolytic deposition of Pt spots on glass was studied for different laser powers, beam diams., and irradn. time. Laser powers up to 500 mW give deposition rates of typically 0.5 mm/s. Temp. calcns. as a function of time allows one to stud ...
