Optical soliton generation device and method with adjustable center frequency

Abstract

The invention relates to the field of interaction of laser and matter in strong-field physics, in particular to an optical soliton generation device and method with an adjustable center frequency. The optical soliton generation device comprises a laser, an action structure and a receiver. The method includes the steps that S1, an interval d between periodical medium planes is selected, the size delta of a periodical medium is obtained according to the formula that d=2*delta, and a periodical micro-nano structure is formed; S2, short-period ultra-short laser pulse is introduced, and the laser pulse is transmitted in the medium; S3, the reflection electric field and the transmission electric field generated when the pulse is transmitted in the periodical micro-nano structure are recorded respectively; S4, the recorded data are processed and analyzed, and then soliton pulse is obtained. By changing the size of the medium in the periodical micro-nano structure, the transmission process of the pulse in the micro-nano structure is affected, the final transmission electric field is further affected, and solitons of different frequencies are obtained. The optical soliton generation method is simple, easy to implement, free of influences of environment conditions and good in stability and repeatability of the system, and well realizes the adjustable center frequency of the optical solitons.

Description

technical field [0001] The invention relates to the field of interaction between laser and matter in strong field physics, in particular to a device and method for generating an optical soliton with adjustable center frequency. Background technique [0002] The concept of soliton was first proposed by British scientist Scott Russell when he was studying water waves. Later, with the work of American scientists Zabusky and Kruskal, the research on soliton theory has been vigorously developed, and it is widely used in the fields of electronics, biology, molecules, optics, and nonlinear transmission. A similar soliton theory was established. The generation of optical soliton pulses is of great significance for the study of new ultrafast nonlinear optical effects and new mechanisms in different micro-nano structures driven by new ultrafast laser pulses, and for exploring the interaction between light and matter in subperiod extreme time and space scales. . [0003] Optical soli...

AI Technical Summary

Problems solved by technology

But the current technology has the following disadvantages: First, to generate solitons of different frequencies, the optical fiber of the original system must be disconnected and re-spliced, and the fusion point will introduce loss; second, the environmental conditions are easy to change during this process, affecting the reliability of the system. Repeatability and Stability

Therefore, in the process of generating optical solitons through the fiber generation method, the system for generating optical solitons is unstable and has a complex structure, and the generated solitons only have obvious red shifts, and it is not easy to adjust the center frequency of optical solitons.

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