Modulated electron beam pumped semiconductor quantum dot white light random laser communication light source

Abstract

The invention provides a modulated electron beam pump semiconductor quantum dot white light random laser communication light source, and belongs to the technical field of optical communication. The modulation bandwidth is narrow and the structure is complex in the prior art. According to the modulated electron beam pump semiconductor quantum dot white light random laser communication light source, an infrared seed light source, a collimating and beam expanding lens, a photoelectric cathode, a micro-channel plate, an electron beam focusing electrode, a transmission anode and a semiconductor quantum dot luminescent layer are coaxially arranged in turn. Voltage of the same direction is applied among the photoelectric cathode, the micro-channel plate, the electron beam focusing electrode and the transmission anode. The transmission anode covers the semiconductor quantum dot luminescent layer. Blue light, green light and red light semiconductor quantum dots of equal molar weight are evenly distributed in the semiconductor quantum dot luminescent layer, and precious metal nano-crystals which are corresponding to the blue light, the green light and the red light and have the extinction effect are also evenly distributed. The modulated electron beam pump semiconductor quantum dot white light random laser communication light source is applied to visible light wireless communication and emits white light random laser carrier waves through pump modulation of modulated electron beams so that indoor lighting can be performed and visible light wireless communication can also be realized.

Description

technical field [0001] The invention relates to a modulated electron beam pumped semiconductor quantum dot white light random laser communication light source, which is used for visible light wireless communication (Li-Fi), emits a white light random laser carrier modulated by the modulated electron beam pump, and performs indoor lighting at the same time , realizing visible light wireless communication, belonging to the technical field of optical communication. Background technique [0002] The light source of visible light wireless communication must not only meet the requirements of high brightness, low power consumption, and wide radiation range as a lighting source, but also have the characteristics of wide modulation bandwidth and high optical output power as a communication light source, so as to obtain the communication system. communication rate. [0003] The modulation bandwidth of a communication light source is limited by the response rate. Although compared wi...

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Problems solved by technology

[0005] In order to improve the modulation bandwidth of visible light wireless communication and increase the channel capacity and modulation rate of the communication system, the existing technology focuses on the composition of the optoelectronic system and the design of the driving circuit. ability, and a specific light source scheme that doubles as a lighting source and a communication light source

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