Sheet type light source system of laser beam

Abstract

The invention relates to a sheet type light source system of a laser beam. The system is composed of a first reflection mirror, second reflection mirror, a Finel lens, a grid fine tuning device, an argon ion laser, a heat exchanger, and a cooling tower. One end of the heat exchanger and the cooling tower to form an external circulation loop; and the other end of the heat exchanger and a resonance cooling chamber of the argon ion laser form an internal circulation loop. Cooling water circulates in the external circulation loop and the internal circulation loop. A laser beam transmitted by the argon ion laser passes through the grid fine tuning device, the Finel lens, the second reflection mirror, and the first reflection mirror successively. The grid fine tuning device, the argon ion laser, the Finel lens, the second reflection mirror, and the first reflection mirror are respectively installed on a sheet light steering device. According to the invention, with the heat exchange system, security operation of the laser can be guaranteed; the transmission orientation of the high-power laser beam can be adjusted flexibly by using the grid fine tuning device and the transmission height and orientation of the sheet light can be adjusted flexibly by using the sheet light steering device, so that the user can change the measurement section conveniently.

Description

technical field [0001] The invention relates to a laser beam sheet light source system for plane laser beam induced fluorescence imaging. Background technique [0002] "Planar laser-induced fluorescence imaging" technology (abbreviated as PLIF----"planar laser-induced fluorescence imaging"). All the application of sheet light source to irradiate the measured object, so that the fluorescent substance contained in it excites (induces) the fluorescent signal, and the fluorescent image is recorded by the camera equipment, and the light intensity field (gray level) contains the concentration field information of the fluorescent substance. The experimental technique for this detection is called PLIF. [0003] The generation system of the sheet light source generally uses a cylindrical lens to expand the laser beam into a fan-shaped sheet light after the laser beam is produced. The lateral light intensity distribution of the sheet light still maintains the Gaussian distribution in...

AI Technical Summary

Problems solved by technology

Later, due to many difficult problems in the use of optical fiber in the transmission of high-power laser beams, such as the poor light-gathering performance of multi-mode optical fibers, the optical coupling efficiency of single-mode optical fibers and laser beams is less than 50%, and so on.

Later, the light guide arm was tried, but the laser beam in the medium-quality multi-joint light guide arm was easy to deviate, and the beam diameter spread was large; the manufacturing cost of the high-quality light guide arm was too high, and the light guide arm scheme also suffered. give up

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