I te tau 1916, i kitea e te tohunga ahupūngao Hūrai rongonui a Einstein te mea ngaro o ngā rēseri. Ko te rēseri (ingoa katoa: Light Amplification by Stimulated Emission of Radiation), ko te tikanga "whakanui ake mā te rēseri whakaoho o te mārama", e kiia ana ko tētahi atu mea nui i hangaia e te tangata mai i te rautau 20, whai muri i te pūngao karihi, ngā rorohiko, me ngā haurua-ira. Koinei te "maripi tere rawa", te "rūri tino tika", me te "mārama kanapa rawa". Ko te ingoa Pākehā katoa o te rēseri e whakaatu whānui ana i te tukanga matua o te hanga rēseri. He whānui ngā whakamahinga o te rēseri, pērā i te tohu rēseri, te whakarewa rēseri, te tapahi rēseri, te whakawhitiwhiti kōrero muka whatu, te whāiti rēseri, te LiDAR, me ētahi atu. I tēnei rā ka kōrero tātou mō te whakatutuki a ngā rēseri i te mahi ine tawhiti.
Ko te kaupapa o te whakaterenga laser
I te nuinga o te wā, e rua ngā tikanga mō te ine i te tawhiti mā te whakamahi i ngā taiaho: te tikanga pātī me te tikanga ā-wāhanga. Ko te kaupapa o te whāwhā pātī taiaho ko te whakaata i te taiaho e tukuna ana e te taputapu tuku taiaho e te mea i inehia, kātahi ka riro mai i te kaiwhiwhi. Mā te tuhi i te wā o te haerenga hoki-mai o te taiaho i te wā kotahi, ko te haurua o te hua o te tere o te mārama me te wā haerenga-mai ko te tawhiti i waenga i te taputapu whāwhā me te mea i inehia. Ko te tika o te tikanga pātī mō te ine i te tawhiti he tata ki te +/-10 henimita. Kāore te tikanga ā-wāhanga e ine i te ā-wāhanga o te taiaho, engari e ine ana i te ā-wāhanga o te tohu kua whakarerekētia ki te taiaho.
Te tikanga o te whakawhāiti i te laser
I muri i te mārama ki te kaupapa o te whāwhā i te rēseri, me titiro tātou ki te mahi tuturu o te whāwhā i te rēseri. I te nuinga o te wā, me whakamahi te whāwhā rēseri tika i te porotiti whakaata katoa, ko te ine tawhiti e whakamahia ana mō te ine whare ka taea te ine tika i te whakaata mai i te mata pakitara maeneene. Ko te take nui o tēnei he tata te tawhiti, ā, he kaha te kaha o te tohu e whakaatahia ana e te mārama. Heoi, ki te tawhiti rawa te tawhiti, me poutū te koki tuku rēseri ki te whakaata whakaata katoa, ki te kore ka ngoikore rawa te tohu whakahoki ki te whiwhi tawhiti tika. Heoi, i roto i te hangarau mahi, ka whakamahia e ngā kaimahi e whakahaere ana i te whāwhā rēseri ngā pepa kirihou angiangi hei mata whakaata hei whakaoti rapanga o te whakaata horapa rēseri kino. Ka taea e te mīhini whāwhā rēseri kounga teitei te whakatutuki i te tika ine tae atu ki te 1 mirimita, ka pai ai ngā rēseri mō ngā kaupapa ine tino tika.
Hei umanga hangarau matatau e whakauru ana i te rangahau me te whanaketanga me te whakaputa, kua whakawhanakehia motuhake e Lumisopot ngā waeine whatu irahiko 905nm 1200m semiconductor, ngā waeine whatu irahiko karāhe erbium 1535nm 3-15km, me ētahi waeine ine irahiko tawhiti rawa. Kāore i rite ki ngā hua whatu irahiko a ētahi atu kamupene, e whakaatu katoa ana ā mātou hua i ngā āhuatanga o te rahi iti, te mama, te utu nui, me te kaha ki te tuku i ngā rahinga nui. Heoi anō, he kanorau ake ā mātou tauira hua, ā, ka taea te whakatutuki i ngā hiahia whatu irahiko katoa. Mēnā kei te hiahia koe ki ā mātou hua, tēnā whakapā mai.
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