Precise force measurement method by a Y-shaped cavity dual-frequency laser |
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| Authors: | Guangzong Xiao Xingwu Long Bin Zhang Geng Li |
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| Affiliation: | Guangzong Xiao,Xingwu Long,Bin Zhang,and Geng Li,Department of Optoelectronic Engineering,College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha 410073,China |
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| Abstract: | A novel precise force measurement based on a Y-shaped cavity dual-frequency laser is proposed.The principle of force measurement with this method is analyzed,and the analytic relation expression between the input force and the change in the output beat frequency is derived.Experiments using a 632.8-nm Y-shaped cavity He-Ne dual-frequency laser are then performed;they demonstrate that the force measurement is proportional to a high degree over almost five decades of input signal range.The maximum scale facto... |
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