Uhlalutyo lweFrequency lwe-Er: Glass Laser Transmitters

Kwiinkqubo ze-optical ezifana ne-laser ranging, i-LiDAR, kunye nokuqondwa kwethagethi, ii-Er:Glass laser transmitters zisetyenziswa kakhulu kwizicelo zasemkhosini nezaseburhulumenteni ngenxa yokhuseleko lwamehlo azo kunye nokuthembeka okuphezulu. Ukongeza kumandla okubetha kwentliziyo, izinga lokuphindaphinda (ukuphindaphinda) liyiparameter ebalulekileyo yokuvavanya ukusebenza. Ichaphazela i-laser'isantya sempendulo, ubuninzi bokufunyanwa kwedatha, kwaye inxulumene ngokusondeleyo nolawulo lobushushu, uyilo lobonelelo lwamandla, kunye nozinzo lwenkqubo.

1. Ingakanani I-Laser Ephindaphindayo?

I-laser frequency ibhekisa kwinani lee-pulses ezikhutshwayo ngeyunithi yexesha, ezilinganiswa nge-hertz (Hz) okanye i-kilohertz (kHz). Ikwaziwa njengerepetition rate, sisalathisi esiphambili sokusebenza kwe-pulsed lasers.
Umzekelo: 1 Hz = 1 i-laser pulse ngomzuzwana, 10 kHz = 10,000 ii-laser pulses ngomzuzwana. Uninzi lwee-Er:Glass lasers zisebenza kwi-pulsed mode, kwaye i-frequency yazo inxulumene kakhulu ne-output waveform, i-system sampling, kunye ne-target echo processing.

2. Uluhlu oluQhelekileyo lwee-Er: ii-Glass Lasers

Kuxhomekeke kwi-laser'Ngokuphathelele uyilo lwesakhiwo kunye neemfuno zesicelo, ii-Er:Glass laser transmitters zinokusebenza ukusuka kwimo ye-single-shot (ephantsi njenge-1 Hz) ukuya kuthi ga kwi-tens kilohertz (kHz). Iifrequencies eziphezulu zixhasa ukuskena okukhawulezayo, ukulandelela okuqhubekayo, kunye nokufunyanwa kwedatha eninzi, kodwa zikwabeka iimfuno eziphezulu ekusebenziseni amandla, ulawulo lobushushu, kunye nobomi be-laser.

3. Izinto Eziphambili Ezichaphazela Izinga Lokuphinda-phinda

①Uyilo loMthombo weMpompo kunye noNikezelo lwaMandla

Imithombo yepompo ye-laser diode (LD) kufuneka ixhase i-high speed modulation kwaye inike amandla azinzileyo. Iimodyuli zamandla kufuneka ziphendule kakuhle kwaye zisebenze kakuhle ukusingatha imijikelo yokuvula/yokucima rhoqo.

②Ulawulo lobushushu

Okukhona i-frequency iphezulu, kokukhona ubushushu buyavela ngakumbi ngeyunithi nganye ngexesha. Izinki zobushushu ezisebenzayo, ulawulo lobushushu lwe-TEC, okanye izakhiwo zokupholisa ze-microchannel zinceda ukugcina imveliso izinzile kwaye zandise ubomi benkonzo yesixhobo.

③Indlela yokutshintsha i-Q

Ukutshintsha kwe-Q okungashukumiyo (umz., ukusebenzisa iikristale ze-Cr:YAG) kudla ngokufanelekile kwiilaser ezisebenzisa i-low-frequency, ngelixa ukutshintsha kwe-Q okusebenzayo (umz., ngee-acousto-optic okanye ii-electro-optic modulators ezifana neeseli zePockels) kwenza ukuba ukusebenza kwe-frequency ephezulu kube nolawulo olucwangcisiweyo.

④Uyilo lweeModyuli

Uyilo lweentloko ze-laser eziqinileyo nezisebenzisa amandla amaninzi ziqinisekisa ukuba amandla okubetha kwentliziyo agcinwa nokuba kumaza aphezulu.

4. Iingcebiso zokuHlanganisa iiFowuni kunye neSicelo

Iimeko ezahlukeneyo zokusetyenziswa zifuna amaxesha ahlukeneyo okusebenza. Ukukhetha izinga elifanelekileyo lokuphindaphinda kubalulekile ukuqinisekisa ukusebenza kakuhle. Nazi ezinye zeemeko eziqhelekileyo zokusetyenziswa kunye neengcebiso:

①I-frequency ephantsi, iMowudi yamandla aphezulu (1)–20 Hz)

Ilungele ukujikeleziswa kwelaser kunye nokuchonga iithagethi, apho ukungena kunye nokuzinza kwamandla kubalulekile.

②I-Medium Frequency, I-Medium Energy Mode (50)–500 Hz)

Ifanelekile kwiindlela zoshishino, ukuhambahamba, kunye neenkqubo ezineemfuno eziphakathi zefrequency.

③I-frequency ephezulu, iMowudi yamandla aphantsi (>1 kHz)

Ilungele kakhulu iinkqubo zeLiDAR ezibandakanya ukuskena kwe-array, ukuveliswa kwe-point cloud, kunye ne-3D modeling.

5. Iindlela zobuchwepheshe

Njengoko ukuhlanganiswa kwelaser kuqhubeka kuhambela phambili, isizukulwana esilandelayo se-Er:Glass laser transmitters siyatshintsha ngale ndlela ilandelayo:

①Ukudibanisa amazinga aphezulu okuphindaphinda kunye nemveliso ezinzileyo
②Ukuqhuba okukrelekrele kunye nolawulo olutshintshatshintshayo lwefrikhwensi
③Uyilo olulula nolusebenzisa amandla aphantsi
④Uyilo oluphindwe kabini lolawulo lwefrikhwensi kunye namandla, okuvumela ukutshintsha imo eguquguqukayo (umz., ukuskena/ukugxila/ukulandelela)

6. Isiphelo

I-frequency yokusebenza yiparameter ephambili kuyilo kunye nokukhetha ii-Er:Glass laser transmitters. Ayimiseli kuphela ukusebenza kakuhle kokufunyanwa kwedatha kunye nempendulo yenkqubo kodwa ikwachaphazela ngqo ulawulo lobushushu kunye nobomi be-laser. Kubaphuhlisi, ukuqonda ibhalansi phakathi kwe-frequency kunye namandla—kunye nokukhetha iiparameter ezihambelana nesicelo esithile—kubalulekile ekwenzeni ngcono ukusebenza kwenkqubo.

Zive ukhululekile ukuqhagamshelana nathi ukuze ufunde okungakumbi malunga noluhlu olubanzi lweemveliso zethu zokudlulisela i-laser ye-Er:Glass ezineefrikhwensi ezahlukeneyo kunye neenkcukacha.'Silapha ukukunceda uhlangabezane neemfuno zakho zobungcali kwiindlela ezahlukeneyo, i-LiDAR, ukuhambahamba, kunye nezicelo zokhuselo.