Rui Zhang, Yuanyuan Chen, Ning Jing, Zhibin Wang, Kewu Li, Kunyang Xie. High-Precision Measurement of Mid-Infrared Waveplate Phase Retardation Based on Dual Photoelastic Difference Frequency Modulation[J]. Acta Optica Sinica, 2019, 39(3): 0312002
- Acta Optica Sinica
- Vol. 39, Issue 3, 0312002 (2019)
Fig. 1. Schematic of mid-infrared waveplate retardation measurement based on dual-PEMs difference frequency modulation
Fig. 2. Schematic of mid-infrared waveplate retardation imaging based on dual-PEMs difference frequency modulation
Fig. 3. PEM size and simulation results. (a) PEM size; (b) vibration mode of PEM; (c) peak retardation amplitude distribution of PEM
Fig. 4. Experimental setup
Fig. 5. Experiment results obtained by the NI card. (a) Without waveplate; (b) with waveplate
Fig. 6. Experiment results of system sensitivity. (a) LCVR retardation values at different driving voltages; (b) experiment results of the system at different LCVR driving voltages
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Table 1. Comparison of experimental results and waveplate detector measurement results
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