1.1 Working principle of QCL Quantum cascade lasers are unipolar semiconductor lasers based on intersubband tr ansi ti ons in heterostruc tures. Laser light is generated from a QCL due to a radiative tr ansiti on resulti n g from confi ned states of th e elec tr on ...
laserespecially the developmentprocess and prospects oftheDFB—FL.The analysis ofDFB-FLsensor workingprinciple andthe wavelengthinterrogation were presented inthe paper.A#asegeneratedcartier(PGC) interrogationsystem basedonunbalanceM.ZfiberinterferometerWasconstructed,and anew interrogationmethod,which Wasbasedon...
1,Through beam reflection working principle; 2,Excellent anti-interference performance 3,High detection accuracy Emitter Receiver NPN+PNP NO/NC PTE-TM60D PTE-TM60DFB Detection type Through beam Rated distance [Sn] 60m (Emitter adjustable) Standard target >φ15...
The principle of laser oxygen measurement is: An infrared laser on one side of the transmitter is emitted to a receiver on the opposite side. The measurement technique is based on the difference of the absorption of light by gas molecules. Most gases only absorb light of specific wavelength, ...
fixedcold WatertroughDiameter-testing laser gauge Single Layer Coolingmovable troughCoiling and wrapping machine Horizontal Tensionaccumulate standPLC control DualWheelTractionCan be optional for motorized pay-off rack,high frequency sparker,etc.The concrete configuration can be adjustable a...
糖尿病人及其亲属伴有自身免疫性疾病,如恶性贫血、甲状腺功能亢进症、桥本甲状腺炎等。自身免疫性肾上腺炎在糖尿病人中约占14%,比一般人群中的患病率高6倍。I型糖尿病患者常有多发性自身免疫性疾病,如同时或先后发生肾上腺炎、桥本甲状腺炎,这3种症状并存称Schmidts综合症。( )...
Please briefly introduce the basic components and working principle of FT-IR spectrometer! 查看完整题目与答案 In the presentation of GTech, the first part is to introduce some basic information about GTech. A. 正确 B. 错误 查看完整题目与答案 在微粒、薄片、纤维等各种形态的增强...
Traditional methods of oxygen content measurement: It includes copper ammonia solution absorption method, fuel cell method, paramagnetic method, zirconium oxide concentration potential method and laser method, etc. The principle and advantages and disadvantages of the method are summarized as follows: ...