The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
0.7 watts 355nm laser is achieved from 3rd-order-QPM PPMgSLT by sum-frequency generation of fundamental and second-harmonic of pulsed Nd: YVO4 laser. 2nd-order-QPM PPMgSLT is successfully fabricated, which promises 355 nm generation of sub-watts order.
Thermal dephasing due to two-photon absorption-induced linear absorption is reduced by minimizing second- and fourth-harmonic beam overlap through tight elliptical focusing perpendicular to the walk-off plane, leading to multi-watt, high-repetition rate ultraviolet generation in BBO.
We derived an expression for the noise between the diffraction orders from a random grating. The result was applied to analyze the statistical duty-cycle error in PPLN, providing an efficient means for poling quality evaluation.
We generate fully spatially coherent soft x-ray beams in the water window region of the spectrum using phase matched high harmonic upconversion of a 2 µm driving laser.
We study nonlinear frequency generation in media with random ferroelectric domain structure. We show that randomness enables one to realize broadband third harmonic generation via cascading of two second order quasi-phase matched nonlinear processes. We investigate spatial and polarization properties of the emitted waves and find them to be in agreement with theoretical predictions.
We demonstrated a 40-W, CW, cavity-enhanced second-harmonic generation (SHG) with kHz linewidth of an injection-locked Nd:YAG laser. The nonlinear characteristics of LiB3O5 were measured with a single-pass configuration to design a SHG cavity.
We present a careful investigation of the optical properties of Zr-doped lithium-niobate crystals. We also investigate in detail the threshold concentration for Zr-doping, by means of three different optical measurement techniques.
We report efficient second harmonic generation of 20.5 W continuous wave laser radiation at 1342 nm using MgO:PPLN. A second harmonic power of 9.5 W in a diffraction limited beam was reached, giving an efficiency of 46%.
We present periodic poling of Rb-doped KTiOPO4. The crystal is used to obtain blue radiation at 398 nm with an efficiency of 30% and a peak intensity of 2 MW/cm2 without grey-tracking.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.