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.
Using a reflection-based pulsed THz imaging system built upon our ErAs:GaAs photoconductive switch and a gated receiver, we quantify image quality at different detection bands (centered at 100, 400, and 600 GHz). Zero-bias Schottky diode detectors mounted in various waveguide sizes are used to tune the operational frequency bands of the imaging system, while the rest of the imaging system remains...
We report the design and measurement details of a new GaAs-based THz photoconductive switch with an average power level in excess of 1 mW and peak power up to 33 W when pumped by a 780-nm, subpicosecond pulse train from a frequency-doubled 1.55-nm fiber mode-locked laser. The power was measured with a thermopile detector calibrated for THz operation and having very high saturation level. The median...
This paper reports a recent switch design that produces milliwatt average power level into free space when pumped by a modest fiber mode-locked laser at ~780 nm. The present PC switch design is based on ultrafast epitaxial GaAs with embedded ErAs nanoparticles grown by molecular beam epitaxy at standard temperatures (>500 degC). The ErAs nanoparticles play a similar role to the arsenic precipitates...
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.