Numerical control driving power supply for intermediate infrared ultrafast laser

Abstract

The invention discloses a numerical control driving power supply for an intermediate infrared ultrafast laser, and relates to the technical field of electronic equipment. The power supply comprises apower supply module, a control module, a constant current module, a voltage stabilization feedback module, a protection module, an intelligent diagnosis module and a man-machine interaction module. Inthe laser driving power supply, an electric driving characteristic of an adjustable voltage stabilizing module, a high-speed processing characteristic of the FPGA and reading of voltage ripple coefficient of an oscilloscope are used to form a closed-loop feedback system; and an artificial intelligence algorithm is utilized to quickly process and optimize the electric signal, so that the low ripple characteristic for the mid-infrared ultrafast laser driving power supply is further realized, and the output ripple coefficient is lower than one percent. The numerical control driving power supplymainly solves the fundamental problem of optical time domain and frequency domain jitter of the laser from the aspect of the driving power supply, and plays an important role in improving the opticalquality of an ultrafast laser, a super-continuum spectrum light source and an optical frequency comb and in the aspects of precision machining, laser medical treatment, precision measurement and the like.

Description

Technical field [0001] The invention relates to the field of electronic technology, and in particular to a numerical control driving power supply for mid-infrared ultrafast lasers. Background technique [0002] Ultrafast laser is a pulse width in picoseconds (10 -12 s) or even femtosecond (10 -15 s) Excellent coherent light source with small pulse width and high peak power (> kW), high repetition frequency (> MHz) and other excellent performance, the mid-infrared laser itself has good water absorption, making it an important application that cannot be replaced by other light sources in smart medicine, polymer material processing, and environmental monitoring. [0003] However, the ultrafast laser itself is a complex nonlinear dynamic system, especially the mid-infrared wavelength ultrafast laser, which is in the deep anomalous dispersion region of the material (soliton mode locking mechanism), and the stability of the soliton pulse is highly dependent on environmental conditio...

AI Technical Summary

Problems solved by technology

However, for complex circuit noise, the reduction of the noise amplitude under single-pass filtering is very limited, and it cannot be applied to high-precision ultrafast lasers.

[0005] In short, none of the traditional schemes can meet the technical requirements of ultrafast laser power supplies with complex dynamic characteristics, so it is urgent to explore new power supply schemes for ultrafast lasers (especially ultrafast lasers in the mid-infrared band)

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