- 差動(dòng)放大器
- 微分放大器
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differentiating amplifier中文什么意思
例句與用法
- Two wedge interferometers are designed that the thickness of one is higher than the other . so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift , but the incident incoherent light only result in consistent intensity signal . through a differentiating amplifier , two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals . this method largely improves the system and the ability of detection . the spacing of line fringes is a function of incident laser wavelength , by analyzing , we can extract the wavelength of incident laser . the optical unit analyzing and results also simulated with matlab
當(dāng)背景光入射時(shí)，直接穿過干涉儀，僅發(fā)生強(qiáng)度的衰減，在兩個(gè)探測平面上產(chǎn)生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當(dāng)激光信號入射，穿過干涉儀時(shí)受到調(diào)制，在探測平面上產(chǎn)生干涉條紋。通過所設(shè)計(jì)的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現(xiàn)相對移位：在兩個(gè)探測平面對應(yīng)的位置上，一路出現(xiàn)亮紋，另一路出現(xiàn)暗紋。