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Experiment on Laser Gaussian Beam
Transformation and Parameter
Measurement |
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◆ Knowledge
Introduction |
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Relative to the general
light source, the laser
has a good directivity,
in other words, the
distribution of light
energy in space is
highly concentrated in
the light propagation
direction. Usually, the
laser resonator emits
the fundamental mode
radiation field, the
cross-section of the
amplitude distribution
follows the Gaussian
function, named
Gaussian beam. In laser
production and
application, it is
necessary to understand
various parameter
indexes of laser beam,
so it is one of the
important experiments in
laser principle to
master laser Gaussian
beam measurement method.
The experiment mainly focuses on the beam quality factor of
Gaussian beams. The
experimental structure
is clear, rich in
content and easy to
operate. The students
can understand the
relevant principles of
laser Gaussian beams and
measure the related
parameters by hands. |
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Main points:
Grasp the concept of beam
quality factor
The experimental parameters
are designed according to the beam
quality factor
Measurement of laser beam quality
factor by knife - edge method
Study on laser Gaussian beam
parameters (beam waist, divergence
angle, etc.) |
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Experimental device |
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◆ Instrument
Model |
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STA-GLB |
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◆ Related
Courses |
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Principles of Laser, Laser Devices,
Physics Optics |
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◆ Basic
Configuration |
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Name |
Specifications |
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Laser |
He-Ne laser, Half-open
cavity, Power≤5 mW |
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Laser endoscope |
Diameter 20 mm, 632.8 nm
output lens,
two-dimensional
adjustable |
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Knife-edge method
measuring system |
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Power meter |
PM-633-100 mW |
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Mechanical components |
Related components
matched to system |
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◆ Expanding Experiments |
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◆ Applications of Instrument |
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Observation of laser beam
appearance |
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Teaching experiment and
research application |
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