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Sum-frequency, Triple Frequency,
Quadruplicated Frequency |
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◆ Knowledge
Introduction |
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A lot of specific
wavelength laser can be
obtained by frequency
conversion of crystal
nonlinear optical
effect. And solid state
laser by the nonlinear
effect has good
application prospect in
optical communications,
laser
medicine, laser
processing and so on.
This is the typical
experiment to study and
research the crystal
nonlinear effect. In the
experiment, there is
green laser of 532nm
output with KTP of extra
cavity frequency
doubling, then adding
LBO and BBO to obtain
laser of 355nm and 266nm
respectively. The
students can master the
method of debugging
laser, and understand
the nonlinear
coefficient of frequency
doubling, sum-frequency,
quadruplicated frequency
by the experiment. |
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Main points:
The concept of nonlinear
coefficient and conversion
efficiency
External cavity frequency
doubling
Frequency doubling,
sum-frequency,
quadruplicated frequency
technology
The measurement and
calculation of the frequency
doubling efficiency |
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Experiment device |
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Spots of three kinds of
lasers |
Output spectrogram of LBO |
Output spectrogram of BBO |
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◆ Related
Courses |
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Principles of Laser, Non-linear
Optics, Laser Optics, Laser Devices, All Solid
State Laser and Nonlinear Optical
Frequency Conversion Technology,
Laser Spectroscopy |
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◆ Basic
Configurations |
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Name |
Specifications |
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Laser |
Q-switched laser,
Wavelength:1064nm（Include
current source） |
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Focusing lens |
F1: f1=80mm, with high
transmittance film of
1064nm
F1: f1=30mm, with high
transmittance film of
532nm |
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Crystal |
KTP, II phase matching (LBO,
I phase matching,
selectable) |
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Nonlinear crystal |
KTP: Class II phase
matching
LBO: Class I phase
matching
BBO: Class I phase
matching |
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Spectro prisms |
Ultraviolet Spectro-prism |
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Others |
Slideway, lens and
crystal base, adjusting
bracket, filter,
Infrared display card,
receiving screen,
baffle. |
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◆ Expanding Experiments |
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◆ Applications of Instrument |
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Research on beam
characteristic of DPSS laser
Research on characteristics
of class I and II phase
matching
crystal
Research on OPA and OPO
experiment
UV laser output experiment |
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Teaching experiment and
research applications
Laser machining, laser
performance
Medical treatment
Laser spectroscopy
application |
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