Nd:YAG optical electronic nonlinearity and energy transfer upconversion studied by the Z-scan technique
نویسندگان
چکیده
منابع مشابه
Z-scan technique for investigation of the noninstantaneous optical Kerr nonlinearity.
By treating laser-induced optical Kerr nonlinearity as a noninstantaneous decaying process, we present the pulse-duration-dependent Z-scan analytical expressions for an arbitrary aperture and an arbitrary nonlinear magnitude. This theory has the capacity to characterize the third-order nonlinear refraction induced by a laser pulse with its temporal duration being much longer than or comparable ...
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The nonlinear optical properties of carbon nanotubes (CNTs) have been studied by using the Z-scan technique. Experiments are performed by CW second harmonic of Nd-YAG laser at 532 nm wavelength with a power of 40 mW. The samples are synthesized by the chemical vapor deposition (CVD) method in the presence of Nickel and Nickel-Cobalt catalysts. In this work, for the first time, effect of the typ...
متن کاملZ-scan Measurement of Upconversion in Er:YAG
Cooperative, or energy-transfer, upconversion reduces the population of the I13/2 manifold in Er:YAG, increasing the laser threshold, but not, in theory, the slope efficiency [1]. We have measured the cooperative upconversion parameter in Er:YAG using the z-scan technique as a function of Er concentration (0.5% to 5%) with the sample at room temperature (298 K) and 80 K. The value we obtain at ...
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ژورنال
عنوان ژورنال: Optical Materials Express
سال: 2015
ISSN: 2159-3930
DOI: 10.1364/ome.5.002588