Quantum Vacuum Measurement Based on Fabry-Perot Laser Resonant Cavity

Wenjie Jia; Zhenhua Xi; Dong Fan; Meng Dong; Chengyao Wu; Yongjun Cheng

doi:10.3788/AOS202040.2212005

Journals >Acta Optica Sinica >Volume 40 >Issue 22 >Page 2212005 > Article

Acta Optica Sinica
Vol. 40, Issue 22, 2212005 (2020)

Quantum Vacuum Measurement Based on Fabry-Perot Laser Resonant Cavity

Wenjie Jia, Zhenhua Xi, Dong Fan, Meng Dong, Chengyao Wu, and Yongjun Cheng^*

Author Affiliations

Research Center of Vacuum Measurement Technology, Lanzhou Institute of Physics, Lanzhou, Gansu 730000, China

show less

DOI: 10.3788/AOS202040.2212005 Cite this Article Set citation alerts

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 Copy Citation Text

show less

Fig. 1. Structural diagram of quantum vacuum measurement device based on Fabry-Perot resonant cavity

Download full size

Fig. 2. Test results of laser frequency uncertainty. (a) Variation of beat frequency with time; (b) evaluation result of Allan deviation

Download full size

Fig. 4. Relationship between measured and retrieved vacuum degrees

Download full size

Serialnumber	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 1. Partial test result of laser frequency

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 2. Measurement results of refractive index

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

Table 3. Measured and retrieved results of vacuum degree

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

Download Citation

Set citation alerts for the article

Tools

Set citation alerts for the article

Save the article for my favorites

Paper Information