972 resultados para Q-switched


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After a criticism on today’s model for electrical noise in resistors, we pass to use a Quantum-compliant model based on the discreteness of electrical charge in a complex Admittance. From this new model we show that carrier drift viewed as charged particle motion in response to an electric field is unlike to occur in bulk regions of Solid-State devices where carriers react as dipoles against this field. The absence of the shot noise that charges drifting in resistors should produce and the evolution of the Phase Noise with the active power existing in the resonators of L-C oscillators, are two effects added in proof for this conduction model without carrier drift where the resistance of any two-terminal device becomes discrete and has a minimum value per carrier that is the Quantum resistance RK/(2pi)

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Alcance y contenido: Copia ms. de un soneto de José Joaquín Benegasi y Luján, relativo a la destrucción de una viña con la que se sustentava.

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Alcance y contenido: Copia ms. del documento que se posiblemente se envío al Congreso Nacional. Los nombres de los valencianos ilustres son: D. Joaquín Lorenzo Villanueva y Astengo, D. Mariano Liñán, D. Vicente Sancho, D. Francisco Ciscar, D. José Rovira, D. Simón de Roxas, D. Antonio Bernabeu, D. Felipe Benicio Navarro, D. Vicente Tomás Traver, D. Antonio Verdú, D. Nicolás Gareli y D. Gregorio Gisbert. Junto a los nombres, hay una breve nota biográfica y los atributos que acompañarán a las estatuas, todos relacionados con las profesiones de todos ellos.

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Contiene: Breve de Papa Benedicto XIV dado en Roma el dia 12 de marzo de 1742, confirmando la licencia a los enfermos para poder comer carne los dias de ayuno preceptivo.

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Resumen: Descripción: retrato de busto de Ortensio basado en escultura

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Maria Josefa Amalia fue Reina consorte de Fernando VII desde 1819 hasta 1829

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El texto hace referencia a Maria Josefa Amalia, Reina consorte de Fernando VII desde 1819 hasta 1829

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Maria Josefa Amalia fue Reina consorte de Fernando VII desde 1819 hasta 1829

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Octavilla

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We propose the use of a polarization based interferometer with variable transfer function for the generation of temporally flat top pulses from gain switched single mode semiconductor lasers. The main advantage of the presented technique is its flexibility in terms of input pulse characteristics, as pulse duration, spectral bandwidth and operating wavelength. Theoretical predictions and experimental demonstrations are presented and the proposed technique is applied to two different semiconductor laser sources emitting in the 1550 nm region. Flat top pulses are successfully obtained with input seed pulses with duration ranging from 40 ps to 100 ps.