Method and device for generating light pulse through graphene oxide electron transfer driven by electric field

Abstract

The invention relates to a light pulse technology, in particular to a method and a device for generating a light pulse through graphene oxide electron transfer driven by an electric field, and solves the technical problem that a conventional light pulse generating device cannot generate the light pulse on the rising edge and the falling edge where the electric field controls a square signal. The method for generating the light pulse through the graphene oxide electron transfer driven by the electric field comprises the steps as follows: (a), voltage which is modulated by the square signal is loaded at two ends of a prepared oxidized grapheme sample, and the highest electric field intensity of the voltage ranges from 150 V/mm to 400 V/mm; (b), continuous laser is adopted to focus on the surface of the oxidized grapheme sample; and (c), a fluorescence pulse which has the intensity increasing suddenly along the falling edge of an external modulating square wave or along the rising edge and the falling edge simultaneously is obtained. According to the method and the device for generating the light pulse through the graphene oxide electron transfer driven by the electric field, a light pulse signal which is enhanced suddenly along the falling edge and the rising edge of the external modulating signal is obtained, and the method and the device can be widely applied to the fields of time resolution light spectrum, three-dimensional optical imaging, optical information processing and the like.

Description

technical field [0001] The invention relates to optical pulse technology, in particular to a method and device for generating optical pulses through electron transfer of graphene oxide driven by an electric field. Background technique [0002] Optical pulses are widely used in medicine, communication, military and spectral analysis. Generally, there are several methods for generating optical pulses by external modulation: mechanical chopping, intensity modulation of electro-optic devices such as acousto-optic modulators and phase modulators. The characteristics of these methods to generate optical pulses are that the optical pulses are directly limited by the external modulation signal, and can only present a pulse waveform consistent with the modulation signal, and cannot generate optical pulses during the rise or fall of the external modulation signal. This cannot meet the technical requirements of time-resolved spectroscopy, three-dimensional optical imaging, and optical...

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Problems solved by technology

[0003] In order to solve the technical problem that the current optical pulse generating device cannot realize the generation of optical pulses at the rising edge and falling ed...

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