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Laser Frequency Doubling Experiment |
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◆ Knowledge
Introduction |
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In nonlinear optics,
the phase matching angle
of nonlinear optical
crystal has important
influence on conversion
efficiency and stability
of frequency doubling
light. This is the
typical experiment to
study the phase matching
angle of nonlinear
optical crystal in
nonlinear theory. By
analyzing the results of
frequency doubling light
power measurement for
different incidence
angles of KTP validates
that the relation to
frequency doubling
efficiency along with
the change of phase
mismatching angle. |
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Main points:
The concept of phase
matching angle (θ，φ)
Three-wave
interaction efficiency:η=η0sinc2(ΔΚl/2)
External
cavity frequency doubling,
factors that influence
efficiency of frequency
doubling
Characteristics
of class I and II phase
matching crystal |
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Experimental device |
Experiment result |
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◆ Related
Courses |
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Principles of Laser, Non-linear
Optics, Laser Optics, All Solid
State Laser and Nonlinear Optical
Frequency Conversion Technology |
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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 |
f=80mm (with high
transmittance film of
1064nm) |
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Crystal |
KTP, II phase matching (LBO,
I phase matching,
selectable) |
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Filter |
With high-reflectivity
film of 1064nm and high
transmittance film of
532nm |
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Power meter |
Detection wavelength
coverage: 0.19-25um,
Sensitivity: 10mW,
Uncertainty<2% |
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Others |
Slideway, lens and
crystal base, adjusting
bracket, optical
universal stage (0-360°), Infrared
display card, laser
goggle etc. |
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◆ Expanding Experiments |
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◆ Applications of Instrument |
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Experiments of laser
frequency doubling and
sum-frequency
355nm/266nm UV laser output
experiment
Detection of crystal (KTP、LBO、BBO
etc.) processing error |
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Teaching experiment and
research applications
Research on characteristics
of class I and II phase
matching
crystal
The cutting angle error
detection of nonlinear
optical crystal |
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