
bhoot imaging

bhoot imaging (jyala 'considence imaging', 'too-photon imaging' kinwa 'sahsambandhit-photon imaging' asehi mhanatat) heey eka tantra aahe jeey done prakash shodhkankadun mahitee ekatra karoon vastuchi pratima tayar karateh eka paramparik, 'multy-pixel' detector joou vastoo pahat nahee aanee eka 'single-pixel' (badali) detector joou vastoo 'pahato'. done tantre dakhavanyat aalee aahet. quantum paddhat guntavalelya photonchya jodyancha srot vaparte, pratyek jodee done shodhakanmadhye samayik kelee jaate, tarr shastriy paddhat guntagunticha fayda naan gheta parasparsambandhit susangat kirananchi jodee vaparte. donhi drushtikon ekach siddhantachya chaukatit samajoon ghetale jaau shakatat.
itihas.
bhoot imaging pahile pratyakshik, tii. buub. pitman, vaay. etch. shih, dii. vhee. strekalov aanee aaa. vhee. 1995 madheel sergienko, guntalelya photon jodyanmadhil quantum parasparsambandhanvar aadharit hota. joditil eka photon objectla aanee nantar buckett detectorla dhadakato tarr dusra (multy-pixel) cameakade vegalya margavar jaato. camearyachi nirmiti keval guntalelya photon jodyanmadhun pixel reecord karnyasathi kelee jaate, jeey buckett detector aanee cameachya emage plain yaa donhila dhadaktat (guntalelya photon jodyanchya ulat, jithe ekane emage plainla dhadak dilee parantu dusra buckett detectorla dhadkat nahee, jeey nondanikrut naheet). mug mothya sankhyene nondanikrut guntalelya jodya haloohaloo eka purn pratima tayar karatat.
nantarchya prayoganni asey soochit kele qee cameala dhadkanara prakash kiran aanee vastoola dhadkanara kiran yanchyatil parasparsambandh purnapane shastriy bhautikshastradvare spasht kele jaau shakatat. jarr quantum sahsambandh upasthit asateel tarr punarnirmit pratimeche signal-too-noise gunottar sudharle jaau shakate. 2009 madhye 'seudothermal ghost imaging' aanee 'ghost defraction' heey 'sanganakeey bhoot-imaging' yojana lagoo karoon pradarshit kele gele, jyamule seudothermal soars prakaranasathi quantum sahsambandh yuktivad jagrut karanyachi garaj shithil jhaali.
alikade, asey disun aale qee 'sankuchit-samvedan' tattvancha thet vapar bhoot imajingmadhye pratima punarbandhanisathi aavashyak mojamapachi sankhya qamee karnyasathi keela jaau shakato. heey tantra aine pixel pratima aine mojmapanpeksha khoopach qamee mojmapansah tayar karnyas anumati dete aanee lidar aanee sukshmadarshiket tyache anuprayog asoo shakatat.
lashkari sanshodhanat pragati.
yuu.ess. lashkar sanshodhan prayogshalene (aii. aar. ell.) 2007 madhye jaminivar, upgrahanvar aanee manavarahit havai vahananvar pragat tantradnyan lagoo karnyachya uddeshane durastha bhoot imaging vikasit kele. ronald eae. myers aanee keith ess. aarlchya decanla 2013 madhye tyanchya quantum imaging tantradnyanasathi paytant midale, jyala 'pratima vaadh aanee sudharanyasathi pranali aanee paddhat' mhanatat.sanshodhakanna 2009 madhye durastha vastoochya pahilya bhoot chitrasah utkrusht sanshodhanasathi lashkari sanshodhan aanee vikas kamgiri puraskar midala.
yantrana.
eka sadhe udaharan bhoot imaging moolbhut tattva spasht karate. done pardarshak chaukatichi kalpana karah eka rikami aanee eka jyamadhye eka vastoo aahe. rikamya petichya magchya bhintivar anek pixelcha eka jaali asato (i.eae. eka camera), tarr vastusah petichi mageel bhint eka mothee eka-pixel (eka badali shodhak) aahe. pudhe, lesarcha prakash beamspletermadhye chamkava aanee parinami yenanya done kirananna asha prakare paravartit qaraa qee pratyek ekach velee tyachya sambandhit petichya ekach bhagatoon jaato. udaharanarth, pahila kiran rikamya chaukatitun boxchya mageel bajus varchya-davya kopyatil pixella marnyasathi jaato, tarr dusra kiran bharalelya chaukatitun jaaun badali shodhakchya varchya-davya kopyala marto.
aata rikamya petichya mageel bajus asalelya pratyek pixella marnyasathi lesar bimbhovati halavanyachi kalpana qaraa, darmyan tyaa vastusah sambandhit beam boxbhovati halwa. pahila prakash kiran nehmi rikamya petichya mageel bajus pixella dhadkel, tarr dusra prakash kiran kadhikadhi vastoone avarodhit keela jaeel aanee badali shodhkaparyant pohochanar nahee. donhi prakash shodhkankadun sanket prapt karnara processor jevha prakash ekach velee donhi shodhakanna dhadakato tevhach pratimecha pixel nondavato. asha prakare, bahu-pixel cameakade jaananya prakashane vastoola sparsh keela nasla taree, eka chhayachitra pratima tayar kelee jaau shakate.
yaa sopya udaharanat, done petty eka velee eka pixel prakashit kelya jaatat. tathapi, done kirananmadhil photonmadhil quantum parasparsambandh vaparoon, jatil prakash vitaran vaparoon yogya pratima dekhil nondavali jaau shakate. tasech, sanganak-niyantrit prakash modulatormadhun ekach pixel detectorkade jaananya keval ekach beemcha vapar karoon yogya pratima reecord kelee jaau shakate.
anuprayog.
besal beam illumination.
aarl shastradnyanni eka vivartan-mukt prakash kiran vikasit keela, jyala besal beam illumination dekhil mhanatat. 10 februwari 2012 roji prakashit jhalelya eka peparmadhye, chamoone dhagal paanee, jangalatil paaney kinwa kopyatil kopyansarkhya maryadit drushyamantesaha pratikool paristhitinna sambodhit karnyasathi, besal beemcha vapar karoon aabhasi bhoot imagingchya tyanchya vyavharyatechya abhyasachi ruparesha aakhali. besel beam ekkendrit-vartul namune tayar karatat. jevha kiran tyachya prakshepavakrat avarodhit kinwa aspasht hoto, tevha shevati spasht chitra tayar karnyasathi mool namuna sudharato.
atishay qamee prakash patalisah pratima.
utsfurt parametric daun-conversion (ess. pii. dii. see.) prakriya majboot avkashiy sahsambandhansah guntalelya-photon jodyancha eka soyiskar srot pradan karate. asha ghoshit ekal photoncha vapar uchch signal-too-noise gunottar sadhya karnyasathi keela jaau shakato, jyamule nondavalelya pratimanmadhun parshvabhumichi ganana aksharshah door hote. pratimechya sampidan aanee sambandhit pratimechya punarbandhanichi tattve lagoo karoon, pratimechya pixelmadhye sarasari ekapeksha qamee shodhalelya photons kachchya detamadhun vastoonchya uchch-gunvattechya pratima tayar kelya jaau shakatat.
infrared prakashasah photon-spars sukshmadarshika.
qamee aavaj aanee eka-photon sanvedansheelata ekatra karnare infrared camerey sahaj upalabdh naheet. atyant qamee honanya ess. pii. dii. see. prakriyedvare nirman jhalelya, lakshaniyaritya bhinn taranglambi asalelya sahsambandhit photons bhoot imagingchya vaparadvare, durmil photons asurakshit lakshyachya infrared pradipanala drishyaman photon mojana cameas jodale jaau shakate. 1550 nmchya tarangalambiche infrared photon lakshya prakashit karatat aanee eka ingas/inap single-photon himskhalan dioddware shodhale jaatat. atyant karyaksham, qamee aavaj, photon-mojani camera vaparoon 460 nmchya taranglambisah yogayogane sapadalelya, sthitee-sahsambandhit, drishyaman photonmadhun pratimechi mahitee nondavali jaate. prakash-sanvedanshil jaivik namune asha prakare chitrit kele jaau shakatat.
remot sensing.
imaging lesar radar (lidar) saha sambhavya pratispardhi mhanoon remot-sensing pranalinmadhye vaparasathi bhoot imagingcha vichar keela jaat aahe. spandit, sanganakeey bhoot pratima aanee spandit, floodlight-illumination imaging lesar radar yanchyatil saiddhantik kamgirichi tulana, jyamadhye paravartit bhoot-pratima pranaliche fayade aahet asha paristhiti olakhalya gelya.
ksh-kiran aanee electron bhoot imaging.
vividh photon vidnyan anuprayogansathi bhoot-pratimachitranache pratyakshik kele gele aahe. european synchrotronavar prapt kelelya mahiticha vapar karoon katheen ksh-kiranansathi bhoot-pratima prayog alikadech sadhya karnyat aala. yethe, vaiyaktik electron synchrotron guchchhanmadhun ksh-kirananchya thipkyanchya spandanancha vapar bhoot-pratima aadhar tayar karnyasathi keela gela, jyamule prayogik ksh-kiran bhoot imagingsathi proof-auph-concept saksham jhaale. haah prayog nondavala gela tyach velee, ex-reey bhoot imagingcha eka forier-space prakar prakashit karnyat aala. ex-reey phela anuprayogansathi bhoot imaging dekhil prastavit kele gele aahe. atee-sapekshatavadi electrons sankuchit sanvedanasah shastriy bhoot imaging dekhil pradarshit kele gele aahe.