A
double frequency conversion efficiency testing arrangement of
centrosymmetry material micro-nanometer structural elements is disclosed that comprises
laser, collimated beam expanding
system, Polaroid, incident light fence, focusing
microscope, object supporter, turntable of
horizontal angle, multi-dimension holder,
double frequency filter disc, casing of barrier,
laser powermeter and big bottom
desk, the
laser emitted by laser device goes through the collimated beam expanding
system, Polaroid and incident light fence, and observed with focusing
microscope, and adjusted with the turntable of
horizontal angle and the multi-dimension holder, then emitted into the measured example, the
double frequency light that its frequency is doubled in the measured example is received and measured by the laser powermeter to display the
light intensity value of the double frequency light, the
light intensity value is compared with the
light intensity value that the measured example and the filter disc are not placed, the double
frequency conversion efficiency can be gained. The position of the measured example is adjusted quickly by multi-dimension holder and turntable of
horizontal angle, the adjustment is convenient, measurement accuracy is high and easy to use and spread.