Browsing CSEM Archive by Title
Now showing items 933-952 of 981
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Tunable Extended-cavity Diode Laser Based on a Novel Flexure-mechanism
(2013-07-03)This article presents the design, implementation and characterization of a Littman-Metcalf extended-cavity diode laser. The extended cavity is closed by a roof (retro-reflecting) prism. The wavelength tuning is based on a ... -
Tunable filter using birefringent plasmonic structures and liquid crystals
(2019)An electrically tunable filter based on a plasmonic phase retarder and liquid crystal cells is reported. The plasmonic phase retarder consists of a periodic array of deep-subwavelength metallic nanostructures. A first ... -
Tuneable dual-comb spectrometer based on commercial femtosecond lasers and reference cell for optical frequency calibration
(2016-06-29)Two commercial femtosecond laser sources have been used to implement a dual-comb spectrometer tuneable across a spectral range from 1.5 to 2.2 ?m. The optical linewidth of the comb modes was characterized for different ... -
Two-Wire Bus Combining Full Duplex Body-Sensor Network and Multilead Biopotential Measurements
(2018-01)Classical approaches to make high-quality measurements of biopotential signals require the use of shielded or multiwire cables connecting the electrodes to a central unit in a star arrangement. As a consequence, increasing ... -
Ultra low power microelectronics for wearable and medical devices
(2017)The requirements for wearables and portable medical devices present a number of challenges in terms of integration, autonomy and connectivity, and demand a careful co-design of hardware and software to reach optimum ... -
Ultra-Lightweight PV module design for Building Integrated Photovoltaics
(2017)Most of the existing solutions for Building Integrated PV (BIPV) are based on conventional crystalline-Silicon (c-Si) module architectures (glass-glass or glass-backsheet) exhibiting a relatively high weight (12-20 kg/m(2)). ... -
Ultra-low phase-noise microwave generation using a diode-pumped solid-state laser based frequency comb and a polarization-maintaining pulse interleaver
(2015-12-14)We report ultra-low phase-noise microwave generation at a 9.6 GHz carrier frequency from optical frequency combs based on diode-pumped solid-state lasers emitting at telecom wavelength and referenced to a common cavity-stabilized ... -
Ultra-low-noise 1 µm optical frequency comb
(2014-07-31)A robust optical frequency comb is realised with an Origami-10 mode-locked femtosecond laser from Onefive GmbH generating a 100 MHz pulse train at a centre wavelength of 1047 nm. The carrier-envelope offset frequency has ... -
Ultra-short pulse non-classical light emitters utilizing multiple wide quantum wells
(2022-05-07)We report a novel ultra-short pulse emitter utilizing transient charge carrier behavior and cooperative emission in multiple wide-quantum-well heterostructures. Its optical cavity reassembles a tandem-cavity laser diode ... -
Utilization of a frequency-swept Fabry-Perot cavity quantum cascade laser for an innovative mid-IR spectrometer
(2022-05-07)We present an innovative approach for a mid-IR spectrometer comprising a commercial Fabry-Perot cavity quantum cascade laser. Utilization of the transient blue-chirped emission of such a laser the spectral fingerprint of ...