物理实验报告,英文.docx

文档介绍：物理实验报告,英文 physicallabreport:Holography Writer: [Backgrounds] icwaves. Amonochromaticopticalwavecanbemathematicallyexpressedasawave2πrx=Acos(ωt+φ-)λequation: 2πr(ωt+?-) anygivenobjectistoobservethebrightness(amplitude),color(wavelength),andshape/distance(phase). -dimensionalimageinspace. Theholographyyouexperienceinthislabwillconsistoftwosteps,a)recording:theamplitudeandphaseinformationofanobjectisrecordedonafilm,b)viewing:illuminatingthefilmtoreconstructtheobjectthatwasbeingfilmed. Thisexperimentusesa658nmdiodelaserasasourceofcoherentlightwhichirradiatestheobjects,andalsoprovidesareferencebeamofuniformamplitudeandphase. [Process] Attheverybeginning,,wehaveadark ,,weadjustthedevicessothatboththeobjectandreferencebeamsareirradiatingthefilmareauniformly. Teachertoldusthattheratiobetweentheobjectandreferencebeamsshouldbetterbebetween1:1to1:(wrappedinblackpaper)andmountitontothe ,weexposethefilmtolightforaboutsecond,thendismountthefilm. Figure1:recordingofahologram development Aftergettingafilm,:developer,stopbath(water),,-. Later,werinsethefilminthewaterbasinfor25seconds,. Thep