Study on kHz Balanced Homodyne Detector

Xiaoli Jin^1、2、*

Author Affiliations

¹State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyua, Shanxi 030006, China

²Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan , Shanxi 030006, China

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DOI: 10.3788/LOP202158.0927003 Cite this Article Set citation alerts

Xiaoli Jin. Study on kHz Balanced Homodyne Detector[J]. Laser & Optoelectronics Progress, 2021, 58(9): 0927003 Copy Citation Text

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Fig. 1. Balanced homodyne detection circuit based on self-subtraction

Fig. 2. Balanced homodyne detection circuit with RC filter circuit

Fig. 3. Circuit design with large induction instead of fixed resistance

Fig. 4. Circuit of kHz balanced homodyne detector

Fig. 5. Experimental setup for performance test

Fig. 6. Laser intensity noise in range of 1‒330 kHz

Fig. 7. Quantum noise curves under different power lasers

Optical power /mW	V₁ /mV	V₂ /mV	V₃ /mV
0.225	300	-297	3
0.45	600	-595	5
0.9	1210	-1207	3
1.8	2440	-2445	-5
3.6	4860	-4867	-7
7.2	9608	-9621	-13

Table 1. Measured DC output voltage

Xiaoli Jin. Study on kHz Balanced Homodyne Detector[J]. Laser & Optoelectronics Progress, 2021, 58(9): 0927003

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