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.
A device for phase and polarization control of omega (800 nm) and its second harmonic 2 omega (400 nm) beams is presented for intense THz generation from laser-induced gas plasma in gas cells. Long-term stability is achieved using an in-line design with a quartz wedge pair and alpha-BBO birefringent plates for phase control and a dual wavelength waveplate to align the polarization of omega and 2 omega...
Terahertz wave generation and detection using air as both the terahertz wave emitter and sensor media through nonlinear optical processes similar to four-wave mixing (named terahertz air photonics) were introduced. Due to the unique features of this technique, it is possible to find applications for terahertz air photonics in remote sensing and identification of explosives by sending optical beams...
We report the first demonstration of both incoherent and coherent detection of pulsed terahertz waves using ambient air or laser-induced air plasma as the sensor through a third-order nonlinear optical process with femtosecond laser pulses.
The phase matching angles for second harmonic generation in KBBF have been determined from 194 to 170 nm. The wavelength of 160 nm generated by the 5th harmonic is the shortest ever obtained by nonlinear crystals.
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.