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 compact terahertz frequency domain spectrometer realized through photo-mixing of two distributed feedback (DFB) diode lasers in ErAs:GaAs is shown to have a signal-to-noise ratio of 80 dB*Hz at 200 GHz and 60 dB*Hz at 1 THz. Continuous frequency sweeping is demonstrated with better than 1 GHz resolution from 200 GHz to 1.85 THz. The system is employed for the characterization of several explosives.
A terahertz frequency domain spectrometer is implemented using two ErAs:GaAs photomixers in a highly compact configuration, utilizing all solid-state components and no moving parts. The system utilizes a single package integration of two 783 nm distributed feedback laser diodes with a high-resolution wavelength discriminator. Digital signal processing electronics provide precise frequency control...
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.