Laser & Optoelectronics Progress, Volume. 57, Issue 3, 031405(2020)
Reducing Differential Polarization Loss in Four-Frequency Differential Laser Gyroscope
The bias caused by differential polarization loss directly affects the performance of four-frequency differential laser gyroscopes. This study proposes an optimization method for the configurable parameters of mirrors, and effectively reduces the differential polarization loss. Based on the Jones matrices, the self-consistent equation is numerically solved, obtaining the influences of the mirror parameters and the non-coplanar folding angle of the four-frequency differential laser gyroscope on the differential polarization loss. The mirror configurations are then improved. In the numerical calculations, the differential polarization loss is most affected by the reflection-induced retardance of the mirror. When the sum of the reflection-induced retardances of four mirrors is 0 and the positive and negative reflection-induced retardances of four mirrors can wipe one another out, the differential polarization loss is 0. This technique will be valuable for reducing the differential polarization loss in engineering applications.
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Min Dang, Wendong Yu, qiang Hu, Linfeng Chen. Reducing Differential Polarization Loss in Four-Frequency Differential Laser Gyroscope[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031405
Category: Lasers and Laser Optics
Received: Jul. 19, 2019
Accepted: Aug. 12, 2019
Published Online: Feb. 17, 2020
The Author Email: Dang Min (stumy@163.com)