Multi-beam broadband frequency modulation pulse laser waveform concentrated measuring apparatus

Abstract

The invention provides a multi-beam broadband frequency modulation pulse laser waveform concentrated measuring apparatus. The measured multi-beam frequency modulation pulse light in the apparatus passes optical-electro-optical conversion modules. Channels output narrowband continuous light provided with different wavelengths and including the information of the measured light. The continuous light is transmitted to the corresponding waveband input end of a fiber wavelength division multiplexing switch module via single-mode fibers and narrowband long pulse light is output. The narrowband long pulse light is input into a fiber time division multiplexing module via a single-mode fiber and a single single-mode fiber outputs a series of long pulse optical signals with equal time delay. The long pulse optical signals pass a fiber amplifier and are transmitted to a photoelectric detector via a fiber. The photoelectric detector outputs an electric signal which enters an oscilloscope via a cable. Output data is transmitted to a computer via a network cable to be processed. The multi-beam broadband frequency modulation pulse laser waveform concentrated measuring apparatus is high in reliability, capable of transmitting information for long distance, and especially suitable for large high-power laser device multi-beam broadband frequency modulation pulse time waveform concentrated measurement.

Description

technical field [0001] The invention belongs to the technical field of high-power laser parameter measurement, and specifically relates to a multi-beam broadband frequency-modulated pulse laser waveform centralized measurement device, which is suitable for remote centralized measurement of broadband frequency-modulated pulse laser waveforms of many large-scale high-power laser devices. Background technique [0002] In large-scale and multi-beam high-power laser drivers, pulsed lasers often use broadband frequency-modulated pulses, and their spectral structures are discretely distributed comb-like spectra with strong time-spectral correlation. modulation. Different from broadband FM pulses, narrowband pulses have no amplitude-frequency effect due to their single spectral structure, and the time characteristics of each point in space on the beam cross-section are consistent, and are consistent with the time characteristics of full-aperture beams. Large-scale high-power laser ...

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Problems solved by technology

[0004] In order to overcome the shortcomings in the prior art that the full-aperture beam waveform measurement and multi-beam remote centralized measurement cannot be realized simultaneously when facing the centralized meas

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