Patent ID: 11964340
Assignee: CHONGQING INSTITUTE OF EAST CHINA NORMAL UNIVERSITY
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A device for fabricating a quartz microfluidic chip by a femtosecond pulse cluster, including:
a femtosecond pulse cluster laser source, configured to output a femtosecond pulse cluster;
a beam splitting and interference system, comprising a beam splitting device, a time domain adjustment controller and a convergent lens, and configured to split the femtosecond pulse cluster into a plurality of parts by the beam splitting device, and to converge split parts by the convergent lens to form a femtosecond pulse cluster plasma grating;
a sample system comprising an imaging device, a quartz glass, and a three-dimensional electronic displacement platform, wherein the quartz glass is placed on the electronic displacement platform, and the electronic displacement platform is movable to control a position where the parts of the femtosecond pulse cluster are converged on the quartz glass to ablate the quartz glass to form a micro-channel structure inside the quartz glass and/or on a surface of the quartz glass; and
a hydrofluoric acid immersion system, configured to immerse the quartz glass in a diluent hydrofluoric acid solution to remove an ablated part of the quartz glass to form the quartz microfluidic chip;
wherein the femtosecond pulse cluster laser source comprises:
an optical fiber seed source, configured to output a pulse train having a repetition frequency f and a time domain interval τs=1/f;
a first electro-optic modulator, configured to perform modulations of frequency lowering and pulse number selecting to obtain a first pulse cluster having a repetition frequency fR;
an optical fiber regeneration and amplification resonant cavity configured to regenerate and amplify the first pulse cluster;
a second electro-optic modulator, configured to shape the regenerated and amplified first pulse cluster to obtain a second pulse cluster having the repetition frequency fR and a time interval r represented by |Ls−La|(n·c), where Ls represents a cavity length of the optical fiber seed source, La represents a cavity length of the optical fiber regeneration and amplification resonant cavity, n represents an average refractive index of a fiber core, and c represents a light speed in vacuum;
an optical fiber amplifier, configured to amplify the second pulse cluster; and
a pulse width compression module, configured to perform a pulse compression to the amplified second pulse cluster.