Uhlahlelo lokuphindaphinda kwe-Er:IziThuthi zeLaser zeglasi

Kwiinkqubo ze-optical ezifana ne-laser range, i-LiDAR, kunye nokuqatshelwa okujoliswe kuyo, i-Er: I-Glass laser transmitters isetyenziswa ngokubanzi kwizicelo zemikhosi kunye nezoluntu ngenxa yokhuseleko lwamehlo kunye nokuthembeka okuphezulu. Ukongeza kumandla okubetha, izinga lokuphindaphinda (i-frequency) yiparamitha ebalulekileyo yokuvavanya ukusebenza. Ichaphazela i-laser's isantya sokuphendula, ukuxinana kokufunyanwa kwedatha, kwaye inxulumene ngokusondeleyo nolawulo lobushushu, uyilo lonikezelo lwamandla, kunye nokuzinza kwenkqubo.

1. Yintoni i-Frequency yeLaser?

I-Laser frequency ibhekiselele kwinani lee-pulses ezikhutshwayo ngeyunithi nganye yexesha, ngokuqhelekileyo elinganiswa nge-hertz (Hz) okanye i-kilohertz (kHz). Eyaziwa ngokuba yireyithi yokuphindaphinda, sisalathiso esiphambili sokusebenza kwee-laser ezithambileyo.
Umzekelo: i-1 Hz = i-1 laser pulse ngesibini, i-10 kHz = i-10,000 laser pulses ngesibini. Uninzi lwe-Er:Iiglasi ze-laser zisebenza kwimowudi ye-pulsed, kwaye i-frequency yabo idityaniswe ngokusondeleyo kwi-wave wave wave, isampuli yenkqubo, kunye nokujoliswa kwe-echo ekujoliswe kuyo.

2. Uluhlu oluQhelekileyo lwe-Er: iiLaser zeGlasi

Kuxhomekeke kwi-laser'Uyilo lwesakhiwo kunye neemfuno zesicelo, Er:Izidluliseli zeglasi zeglasi zinokusebenza ukusuka kwimowudi yokudutyulwa enye (ephantsi njenge-1 Hz) ukuya kumashumi ekhilohertz (kHz). Iifrikhwensi eziphezulu zixhasa ukuskena okukhawulezayo, ukulandelela okuqhubekayo, kunye nokufumana idatha eshinyeneyo, kodwa zikwanyanzelisa iimfuno eziphezulu kusetyenziso lwamandla, ulawulo lobushushu, kunye nobomi belaser.

3. Imiba ephambili echaphazela ireyithi yokuphindaphinda

①Umthombo wempompo kunye noYilo loNikezelo lwaMandla

Imithombo yempompo ye-Laser diode (LD) kufuneka ixhase ukumodareyitha kwesantya esiphezulu kwaye inike amandla azinzileyo. Iimodyuli zamandla kufuneka ziphendule kakhulu kwaye zisebenze ngokuphindaphindiweyo kwimijikelezo yokuvula / yokuvala.

②Ulawulo lweThermal

Ukuphakama kwamaza, kokukhona ubushushu buyenziwa ngexesha leyunithi nganye. Iisinki zobushushu ezisebenzayo, ulawulo lobushushu lwe-TEC, okanye izakhiwo zokupholisa ze-microchannel zinceda ukugcina iziphumo ezizinzileyo kunye nokwandisa ubomi benkonzo yesixhobo.

③Q-Ukutshintsha indlela

I-Passive Q-switching (umzekelo, ukusebenzisa i-Cr: i-crystals ye-YAG) ifanelekile ngokubanzi kwii-laser eziphantsi-frequency, ngelixa i-Q-switching esebenzayo (umzekelo, nge-acousto-optic okanye i-electro-optic modulators ezifana neeseli ze-Pockels) yenza ukuba ukusebenza kwamaxesha amaninzi kunye nolawulo olucwangcisiweyo.

④Uyilo lwemodyuli

Uyilo lwentloko yelaser ebambeneyo, eyonga amandla iqinisekisa ukuba amandla e-pulse agcinwa nakwi-frequencies ephezulu.

4. Iingcebiso zokuTyaniswa rhoqo kunye neSicelo

Iimeko zesicelo ezahlukeneyo zifuna iifrikhwensi zokusebenza ezahlukeneyo. Ukukhetha izinga lokuphindaphinda elichanekileyo kubalulekile ekuqinisekiseni ukusebenza kakuhle. Ngezantsi kukho iimeko zokusetyenziswa okuqhelekileyo kunye neengcebiso:

①I-Frequency ePhantsi, Imowudi yaMandla aPhezulu (1-20Hz)

Ilungele uluhlu olude lwelaser kunye nokutyunjwa okujoliswe kuyo, apho ukungena kunye nokuzinza kwamandla kungundoqo.

②Ukuphindaphinda okuPhakathi, iMowudi yaMandla aPhakathi (50-500Hz)

Ifanelekile kuluhlu lwemizi-mveliso, ukuhamba, kunye neenkqubo ezineemfuno zamaza aphakathi.

③Ukuphindaphinda okuPhezulu, Imowudi yaMandla aPhantsi (>1 kHz)

Eyona ifaneleka kakhulu kwiinkqubo ze-LiDAR ezibandakanya ukuskena koluhlu, ukuveliswa kwamafu, kunye nemodeli ye-3D.

5. Iindlela zeTekhnoloji

Njengoko udibaniso lwelaser luqhubela phambili, isizukulwana esilandelayo se-Er:Izidluliseli zeglasi zeglasi sikhula ngokwale migaqo ilandelayo:

①Ukudibanisa amazinga aphezulu okuphindaphinda kunye nemveliso ezinzileyo
②Ukuqhuba okukrelekrele kunye nolawulo oluguqukayo lwamaza
③Ubulula kunye noyilo lokusetyenziswa kwamandla aphantsi
④Ulwakhiwo oluphindwe kabini lolwakhiwo lwazo zombini iifrikhwensi kunye namandla, uvumela ukutshintshwa kwemowudi eguquguqukayo (umzekelo, ukuskena/ujoliso/ukulandelela)

6. Isiphelo

I-frequency yokusebenza yiparameter engundoqo kuyilo kunye nokukhethwa kwe-Er: I-Glass laser transmitters. Ayigxininisi nje kuphela ukusebenza kakuhle kokufunyanwa kwedatha kunye nengxelo yenkqubo kodwa ikwachaphazela ngokuthe ngqo ulawulo lwe-thermal kunye ne-laser yokuphila. Kubaphuhlisi, ukuqonda ibhalansi phakathi kobuninzi kunye namandla-kunye nokukhetha iiparamitha ezilungele isicelo esithile-ngundoqo wokuphucula ukusebenza kwenkqubo.

Zive ukhululekile ukuqhakamshelana nathi ukuze ufunde ngakumbi malunga noluhlu lwethu olubanzi lwe-Er:Imveliso ye-laser transmitter ene-frequencies kunye neenkcukacha. Thina're apha ukukunceda ukuba uhlangabezane neemfuno zakho zobuchwephesha kwi-range, LiDAR, navigation, kunye nezicelo zokhuselo.