CPC G01N 21/359 (2013.01) [G02B 5/005 (2013.01); G02B 17/023 (2013.01); G02B 17/0668 (2013.01); G02B 19/0014 (2013.01); G02B 27/144 (2013.01); G02B 27/145 (2013.01); G01N 2201/0636 (2013.01); G01N 2201/06113 (2013.01); G02B 5/205 (2013.01)] | 20 Claims |
1. A non-linear optical pumping detection apparatus, comprising a main light path, a non-degenerate detection system, a non-degenerate excitation system, a degenerate detection system, and a reference system, wherein
the main light path sequentially comprises a laser, a first aperture diaphragm, a chopper, a first polarizer, a second polarizer, a first reflector, and a first laser beam splitter;
the non-degenerate detection system sequentially comprises a second reflector, a first adjustable attenuator, a first converging lens, a heavy water tank, a second pinhole diaphragm, a neutral filter, a second converging lens, a second laser beam splitter, a third converging lens, a sample to be measured, and a first optical signal collection system; the first optical signal collection system is connected to an optical multichannel analyzer through a first optical fiber, and the optical multichannel analyzer is connected to a computer;
the non-degenerate excitation system sequentially comprises a second adjustable attenuator, a third reflector, a fourth reflector, a fifth reflector, a sixth reflector, a seventh reflector, an eighth reflector, a ninth reflector, a fourth converging lens, the sample, and an optical power meter; the laser passing through the third converging lens and the laser passing through the fourth converging lens are superposed at an angle 5 to 15 degrees in the sample;
the degenerate detection system sequentially comprises a third laser beam splitter, a triple prism, a fifth converging lens, the sample, and a second optical signal collection system; the second optical signal collection system is connected to the optical multichannel analyzer through a second optical fiber, and the optical multichannel analyzer is connected to the computer;
the reference system sequentially comprises a tenth reflector, the sample, and a third optical signal collection system; the third optical signal collection system is connected to the optical multichannel analyzer through a third optical fiber, and the optical multichannel analyzer is connected to the computer.
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