نتایج جستجو برای: pockels effect
تعداد نتایج: 1641720 فیلتر نتایج به سال:
Two-photon microscopy has revolutionized life sciences by enabling long-term imaging of living preparations in highly scattering tissue while minimizing photodamage. At the same time, commercial two-photon microscopes are expensive and this has prevented the widespread application of this technique to the biological community. As an alternative to commercial systems, we provide an update of our...
We present a new optical system that significantly reduces helicity-dependent instrumental intensity asymmetries. It is an extension of a previous scheme [Appl. Opt.47, 2465 (2008)], where one laser beam is split using a polarizing beam splitter into two with orthogonal linear polarizations. The beams are sent through a chopper, allowing only one to pass at a time. The two temporally separated ...
Silicon-organic hybrid (SOH) devices combine silicon waveguides with a number of specialized materials, ranging from third-order optically-nonlinear molecules to second-order nonlinear polymers and liquid-crystals. Second-order nonlinear materials allow building high-speed and low-voltage electro-optic modulators, which are key components for future silicon-based photonics transceivers. We repo...
Two standard commercial flashlamp-pumped Nd:YAG (YAG denotes yttrium aluminum garnet) lasers have been upgraded to "pulse-burst" capability. Each laser produces a burst of up to 15 2 J Q-switched pulses (1064 nm) at repetition rates of 1-12.5 kHz. Variable pulse-width drive (0.15-0.39 ms) of the flashlamps is accomplished by insulated gate bipolar transistor (IGBT) switching of electrolytic cap...
Submitted by drupal on Wed, 10/23/2013 18:04 Firm: ADVR, Inc. [2] Award Solicitation: NASA STTR 2010 Phase I Solicitation [3] Award ID: STTR_10_P1_100163 Award Topic: Lidar, Radar, and Passive Microwave [4] Award Dollars: 99 984.00 Award Lead Center: Goddard Space Flight Center [5] Proposal Number: T4.01-9837 Proposal Title: A Waveguide Based, High Power Pockels Cell Modulator for Sub-Nanosecon...
A single <110> cadmium-manganese-telluride crystal that exhibits both the Pockels and Faraday effects is used to produce a Poynting-vector sensor for signals in the microwave regime. This multi-birefringent crystal can independently measure either electric or magnetic fields through control of the polarization of the optical probe beam. After obtaining all the relevant electric and magnetic fie...
An electro-optic modulator offers the function of modulating propagation light in a material with an electric field and enables seamless connection between electronics-based computing photonics-based communication. The search for materials large coefficients low optical loss is critical to increase efficiency minimize size devices. We present semi-empirical method compute ferroelectric by combi...
Electronic (β(e)) and vibrational (β(v)) first-order hyperpolarizabilities of uracil were determined in gas and water solution using the Coulomb-attenuating Density Functional Theory level with the Dunning's correlation-consistent aug-cc-pVDZ basis set. Frequency-dependent β(e) values were computed for the Second Harmonic Generation (SHG) and Electric Optical Pockels Effect (EOPE) nonlinear opt...
Microwave switches, or Radio Frequency (RF) switches have been intensively used in microwave systems for signal routing. Compared with the fast development of microwave and wireless systems, RF switches have been underdeveloped particularly in terms of switching speed and operating bandwidth. In this paper, we propose a photonics based RF switch that is capable of switching at tens of picosecon...
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