Liu Xiaomin, Wang Junqiao, Ma Fengying, Wu Yu, Liang Erjun, Yang Guoguang. Terahertz detecting method using multi-reflection optical lever[J]. Infrared and Laser Engineering, 2012, 41(8): 2058-2062.
Citation: Liu Xiaomin, Wang Junqiao, Ma Fengying, Wu Yu, Liang Erjun, Yang Guoguang. Terahertz detecting method using multi-reflection optical lever[J]. Infrared and Laser Engineering, 2012, 41(8): 2058-2062.
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Terahertz detecting method using multi-reflection optical lever

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    • Abstract
  • Anewmicro-opticalmethodforTerahertzradiationmeasurementwaspresented,whichwas basedonopticalleverandthermalradiationdetection.Abi-materialmicrocantileverwasusedtogenerate micro-deformationcausedbyTerahertzradiantthermaleffect,andthemicro-deformationwasmeasuredby amultiplereflectionopticallevercomposedofapairofplanemirrors.ThenradiationpowerofTerahertz waveswereobtained.Micro-displacementtheoreticalresolutionofthismultiplereflectionopticallever methodcouldbelessthan1nmandameasuringsystemwassetuptoverifyit.Experimentsshowthat theoreticalresolutionofthistestsystemislessthan4nmanditsactualresolutionwaslessthan10nm. DesignsandparametersofaTerahertzdetectorbasedonthismethodweregiven.Thisapproachhadmany advantagessuchasanti-airturbulence,anti-beamcross-talk,andworkingatroomtemperature.Sothisnew methodwassuitableforrealizingminiaturizedTerahertzdetectorswiththefeaturesofuncooled,real-time, low-cost,anditwasalsoappropriateformanufacturingarraydetectorsforimagingdetection.
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