Dual-frequency Doppler velocimeter based on delay interferometric optical phase-locking

Feng Yuxiang; Xie Weilin; Meng Yinxia; Zhang Ling; Yang Jiang; Wei Wei; Dong Yi

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Dual-frequency Doppler velocimeter based on delay interferometric optical phase-locking

机译：基于延迟干涉光学锁相的双频多普勒速度计

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摘要

We present a dual-frequency laser Doppler velocimeter (DF-LDV) relying on a DF laser source (DFLS) generated by optical phase-locking two individual lasers to a common unbalanced Mach-Zehnder interferometer, which allows achieving high stability regardless of the DF separation of the lasers. This DFLS is evaluated using an optical frequency comb, testifying to the generation of DFLS with large DF separation up to terahertz with flexible tunability and high stability. Demonstration of DF-LDV using the DFLS of similar to 1.024 THz separation has achieved 1.62 x 10(-2) mm/s velocity resolution even for a slow velocity of 1.8 mm/s in a mere 5 s acquisition time, confirming the high resolution and efficient speckle noise suppression enabled by the proposed DF-LDV. Featuring high precision, flexibility, and robustness, this method is particularly attractive from the practical point of view. (C) 2021 Optical Society of America

机译：我们提出了一种双频激光多普勒测速仪（DF-LDV），该测速仪依赖于一个DF激光源（DFLS），该DFLS由两个单独的激光器通过光学相位锁定到一个共同的非平衡马赫-曾德尔干涉仪上而产生，无论激光器的DF分离如何，都可以实现高稳定性。使用光学频率梳对这种DFL进行了评估，证明了产生的DFL具有高达太赫兹的大DF分离，具有灵活的可调谐性和高稳定性。使用类似于1.024太赫兹间隔的DFL对DF-LDV进行演示，即使在仅5秒的采集时间内以1.8 mm/s的低速，也能实现1.62 x 10（-2）mm/s的速度分辨率，证实了拟议DF-LDV能够实现高分辨率和有效的散斑噪声抑制。该方法具有精度高、灵活性强、鲁棒性强等特点，从实用的角度来看尤其具有吸引力。（2021）美国光学学会

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来源
《Optics Letters》 |2021年第9期|共4页
作者
Feng Yuxiang; Xie Weilin; Meng Yinxia; Zhang Ling; Yang Jiang; Wei Wei; Dong Yi;
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作者单位

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

Beijing Inst Technol Key Lab Photon Informat Technol Sch Opt &

Photon Minist Ind &

Informat Technol 5 South St Beijing 100081 Peoples R China;

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正文语种 eng
中图分类计量学;光学;
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5. Birefringent dual-frequency laser Doppler velocimeter using a low-frequency lock-in amplifier technique for high-resolution measurements [J] . Zhu Hongbin, Chen Junbao, Guo Dongmei, Applied optics . 2016,第16期

机译：使用低频锁定放大器技术的双折射双频激光多普勒测速仪用于高分辨率测量
6. Birefringent dual-frequency laser Doppler velocimeter using a low-frequency lock-in amplifier technique for high-resolution measurements [J] . Zhu Hongbin, Chen Junbao, Guo Dongmei, Applied optics . 2016,第16期

机译：使用低频锁定放大器技术的双折射双频激光多普勒测速仪用于高分辨率测量
7. Multi-Component, Multi-Point Interferometric Rayleigh/Mie Doppler Velocimeter [J] . NASA Tech Briefs . 2012,第2期

机译：多分量，多点干涉瑞利/米氏多普勒测速仪
8. Speckle noise reduction of a dual-frequency laser Doppler velocimeter based on an optically injected semiconductor laser [C] . Chih-Hao Cheng, Jia-Wei Lee, Tze-Wei Lin, Physics and simulation of optoelectronic devices XX. . 2012

机译：基于光注入半导体激光器的双频激光多普勒测速仪的斑点噪声降低
9. Optically passive fiber sensors for dynamic studies using Doppler velocimeter and white-light interferometry. [D] . Lo, Yu-Lung. 1995

机译：使用多普勒测速仪和白光干涉仪进行动态研究的光学无源光纤传感器。
10. All-Fiber Configuration Laser Self-Mixing Doppler Velocimeter Based on Distributed Feedback Fiber Laser [O] . Shuang Wu, Dehui Wang, Rong Xiang, 2016

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11. Speckle noise reduction of a dual-frequency laser Doppler velocimeter based on an optically injected semiconductor laser [O] . C. H. Cheng 2014

机译：基于光注入半导体激光器的双频激光多普勒测速仪的斑点噪声降低
12. Interferometric Fiber Optic Doppler Velocimeter with High Dynamic Range. [R] . Fabiny, L., Kersey, A. D., Gottwald, W. D. 1997

机译：具有高动态范围的干涉式光纤多普勒测速仪。

Dual-frequency Doppler velocimeter based on delay interferometric optical phase-locking

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