Qaab-dhismeedka asaasiga ah ee laser-ka fiber-ka hal-qaab ah

Qaab-dhismeedka asaasiga ah ee alaser fiber hal-hab ah

Waxqabadka cajiibka ah ee hal-qaablaysarka fiber-kaWaxay ka timaadaa qaab-dhismeedkooda gudaha ee saxda ah. Hawlgalka iskaashiga hufan ee dhammaan qaybaha waa aasaaska lagu gaarayo wax soo saar laysar oo deggan oo tayo sare leh.

Tusaale ahaan, laysarka 976nm oo leh hufnaan beddelka elektiroonigga ah oo aad u sarreysa ayaa loo isticmaalaa in lagu dallaco faybarka la dahaadhay, ka dibna nalka abuurka 1064nm oo leh tayo wanaagsan ayaa loo isticmaalaa in lagu hago faybarka la dahaadhay si loo sii daayo laysarka 1064nm oo leh tamar sare. Inta badan tamarta laysarka 1064nm ee loo baahan yahay, ayaa loo baahan yahay awood iyo tiro badan oo ah isha bamka.

Sharaxaad faahfaahsan oo ku saabsan qaybaha muhiimka ah

Isha bamka waa isha tamarta eelaysar, badanaa alaysarka semiconductor-kadiode, oo hirarka uumiga uu la mid yahay heerka ugu sarreeya ee nuugista ee dhexdhexaadka faa'iidada (tusaale ahaan, fiber-ka ytterbium-doped wuxuu u dhigmaa hirarka 915nm ama 976nm). Laser-ka hal-qaabka ah wuxuu u baahan yahay isha iftiinka bamka inuu sidoo kale yeesho isku xirnaan meel sare. Sidaa darteed, diode-yada laysarka ee hal-qaabka ah ee fiber-ku-xidhan ayaa badanaa loo isticmaalaa si loo hubiyo in iftiinka bamka si hufan loogu duri karo xudunta fiber-ka hal-qaabka ah ee wanaagsan.

2. Faybaraha Gain waa udub-dhexaadka ugu muhiimsan ee lagu sameeyo laysarka, badanaana waa fiilooyin galaas ah oo quartz ah oo lagu dahaadhay walxo dhulka naadir ah. Ayoonada caadiga ah ee la dahaadhay waxaa ka mid ah ytterbium (Yb³⁺), erbium (Er³⁺), thulium (Tm³⁺), iwm., kuwaas oo u dhigma xargaha hirarka kala duwan ee wax soo saarka (sida 1064nm, 1550nm, 2μm, iwm.). Dhererka fiilada gain waa in si sax ah loogu qaabeeyaa si loo hubiyo nuugista buuxda ee iftiinka bamka iyadoo la ilaalinayo beddelka indhaha-optic-ga ee waxtarka sare leh.

3. Qaabka ugu badan ee lagu hirgeliyo godka resonant-ka waa isku-xidhka fiber-ka Bragg. Shabaq waxaa la sameeyaa iyadoo la soo bandhigo fiilooyinka indhaha ee ku jira cidhifyada faragelinta laser-ka ee ultraviolet-ka, taasoo keenta isbeddel joogto ah oo ku yimaada tusmada refractive-ka ee gobolladooda asaasiga ah. Iyadoo la xakameynayo muddada iyo dhererka shabaqyada, hirarka dhexe iyo baaxadda milicsigeeda si sax ah ayaa loo xakamayn karaa. Qaab-dhismeedka godka resonant-ka ee si buuxda loo qurxiyey uma baahna qaybo kala duwan sida muraayadaha indhaha, taasoo si weyn u xoojinaysa xasilloonida iyo awoodda ka hortagga faragelinta ee nidaamka.

4. Nidaamka soo saarista isku-dhafka iftiinka ayaa badanaa ku yaal gadaasha shabagga dhammaadka wax soo saarka. Shaqadiisu waa inuu u beddelo laser-ka kala duwan ee ka soo baxa fiilada indhaha iftiin isku-dhafan ama uu diiradda saaro dusha sare ee shaqada. Nidaamkani badanaa wuxuu ka kooban yahay muraayadaha is-diiradda saaraya ama kooxaha muraayadaha yaryar ee yar yar wuxuuna qaataa qaab-dhismeed farsamo oo sax ah si loo hubiyo saxnaanta isku-dhafka. Naqshadeynta indhaha ee tayada sare leh waxay si wax ku ool ah u yareyn kartaa khaladaadka waxayna hubin kartaa in iftiinka soo-saarku uu ilaaliyo qaybinta Gaussian ee aadka u fiican.