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.
We report on the development of e-beam pumped mid-UV (∼ 280nm) sources fabricated from AlGaN MQWs grown by plasma-assisted (PA) MBE on AlN/c-Al2O3 templates. The high output power above 100 mW has been demonstrated in a pulse-scanning regime. This achievement is attributed to the enhanced carrier confinement within the high-quality sub-monolayer digital alloying quantum wells and improved quality...
Folded-type waveguide is a kind of significant slow wave structure (SWS) for developing high power millimeter wave and terahertz wave source. This paper reports the study on the folded type waveguide and its applications in millimeter wave and THz source in Vacuum Electronics National Laboratory(VENL) in China, in which the analysis and simulation of the RF properties and the electron beam-wave interaction...
We demonstrate passive mode-locking of a Nd:Sc0.2Y0.8SiO5 laser using a semiconductor saturable absorber mirror. The pulse train shows output power of 0.5 W and pulse duration of 3.5 ps at repetition rate of 118 MHz.
Recently, diode-pumped solid-state lasers based on disordered Nd-doped crystals have attracted significant attention. In mode-locked operation they have a potential to generate tunable laser radiation with pulse duration in sub-picosecond time scale as well as to emit muti-wavelength ultrashort pulses which makes them attractive as a source for terahertz generation [1]. Nowadays, the binary and ternary...
The design, realization and test of a new Ka-band schottky diodes limiter was presented in this paper. Measurement result shows the limiting output power between 13.5 to 16.2dBm at frequency range from 34GHz to 36GHz. The limiter can withstand at least 776mW (28.9dBm) CW power.
Effective diode-pumped cw tunable laser action of a new crystal Yb3+:Lu2Si2O7 (LPS) is demonstrated for the first time to our knowledge. The advantage of Yb: LPS is the presence of effective low-symmetry monoclinic structure and its single crystallographic site, which are benefit for the low threshold and high output energy. With a 5-at% Yb: LPS sample, we achieved 2.22 W output power at 1070 nm....
Diode-pumped stable CW mode-locked laser in Yb:LuAG crystal was demonstrated. The pulse duration of 7.63 ps was achieved without any negative dispersion elements. With pump of 8 W, output power was 610 mW with repetition rate of 86 MHz.
This work successfully demonstrates SOA-based optical switches that utilize optical filtering techniques at ultrahigh bit rates up to 640 Gbit/s. A simple condition for the minimum bit pattern length is derived and an effective method for simulating patterning effects is introduced. This method is then used to analyse a specific configuration for high-speed signal processing.
We observe that n-GaAs terahertz emitters with as-grown Be-doped low-temperature-grown (LTG)-GaAs layers exhibits greater radiation power than devices with or without undoped LTG-GaAs layers and explain it by the enhanced electric field in the surface depletion layer.
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.