Acta Optica Sinica, Volume. 40, Issue 22, 2212005(2020)
Quantum Vacuum Measurement Based on Fabry-Perot Laser Resonant Cavity
Figures & Tables(6)
Fig. 1. Structural diagram of quantum vacuum measurement device based on Fabry-Perot resonant cavity
Fig. 2. Test results of laser frequency uncertainty. (a) Variation of beat frequency with time; (b) evaluation result of Allan deviation
Table 1. Partial test result of laser frequency
View tableTable 1. Partial test result of laser frequency
Serial number Time /s Δν /MHz ν /MHz 1 0 0 384350383.4336 2 4000 0.0007 384350383.4329 3 8000 0.0010 384350383.4326 4 12000 0.0017 384350383.4319 5 16000 0.0021 384350383.4315 6 20000 0.0025 384350383.4311 7 24000 0.0030 384350383.4306 8 28000 0.0034 384350383.4301 9 32000 0.0039 384350383.4297 10 36000 0.0044 384350383.4292
Table 2. Measurement results of refractive index
View tableTable 2. Measurement results of refractive index
Serial number Vacuum degree /Pa n-1 Serial number Vacuum degree /Pa n-1 1 111 2.73023×10-7 12 10051 2.51911×10-5 2 620 1.54968×10-6 13 20230 5.07167×10-5 3 1034 2.58229×10-6 14 30089 7.54434×10-5 4 2207 5.52102×10-6 15 40255 1.00935×10-4 5 3169 7.93029×10-6 16 50304 1.26143×10-4 6 3998 1.00120×10-5 17 60498 1.51719×10-4 7 5040 1.26219×10-5 18 70038 1.75653×10-4 8 6067 1.51961×10-5 19 80192 2.01135×10-4 9 7038 1.76357×10-5 20 90104 2.26002×10-4 10 8044 2.01531×10-5 21 100186 2.51302×10-4 11 9046 2.26681×10-5
Table 3. Measured and retrieved results of vacuum degree
View tableTable 3. Measured and retrieved results of vacuum degree
Measured value /Pa Beat frequency /MHz Deviation of modulus Retrieved value /Pa Relative deviation 10056 -595.35 7 10052 3.90×10-4 20235 227.86 13 20233 2.40×10-5 30094 744.00 19 30084 9.60×10-5 40260 1554.07 25 40248 1.21×10-4 50309 757.33 32 50298 1.06×10-4 60503 1599.67 38 60496 7.50×10-5 70043 1811.00 44 70038 5.10×10-5 80197 1119.60 51 80198 -7.00×10-6 90109 1689.90 57 90113 -3.50×10-5 100191 928.30 64 100199 -8.40×10-5
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Wenjie Jia, Zhenhua Xi, Dong Fan, Meng Dong, Chengyao Wu, Yongjun Cheng. Quantum Vacuum Measurement Based on Fabry-Perot Laser Resonant Cavity[J]. Acta Optica Sinica, 2020, 40(22): 2212005
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: May. 29, 2020
Accepted: Aug. 3, 2020
Published Online: Oct. 25, 2020
The Author Email: Cheng Yongjun (ouc2016opjwj@sina.com)
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