Kunzwisisa Duty Cycle muSemiconductor Lasers: Zvinoreva Zvikuru Zviri Kuseri kweParamende Diki

Mu tekinoroji yemazuva ano ye optoelectronic, ma semiconductor lasers anoonekwa zvakanyanya nechimiro chawo chidiki, kushanda zvakanaka, uye kukurumidza kupindura. Anoita basa rakakosha muminda yakaita sekutaurirana, hutano, kugadzirisa maindasitiri, uye kunzwa/kutarisa. Zvisinei, kana tichikurukura mashandiro ema semiconductor lasers, chimwe chinhu chinoita sechiri nyore asi chakakosha zvikuru—duty cycle—chinowanzo furatirwa. Chinyorwa chino chinonyura mupfungwa, kuverenga, zvinoreva, uye kukosha kwe duty cycle muma semiconductor laser systems.

1. Chii chinonzi Duty Cycle?

Duty cycle i ratio isina dimension inoshandiswa kutsanangura huwandu hwenguva iyo laser iri mu "on" mukati menguva imwe chete yechiratidzo chinodzokororwa. Inowanzo ratidzwa se percentage. Fomura yacho ndeiyi: Duty Cycle=(Pulse Width)/Nguva yekurova kwemoyo (Pulse Period)×100%. Semuenzaniso, kana laser ikaburitsa pulse ye1-microsecond yega yega 10 microseconds, duty cycle ndeiyi: (1 μs/10 μs)×100%=10%.

2. Sei Kutenderera Kwebasa Kwakakosha?

Kunyangwe ichingova chiyero, duty cycle inokanganisa zvakananga manejimendi yekupisa kwelaser, hupenyu hwese, simba rekuburitsa, uye dhizaini yesystem yese. Ngationgororei kukosha kwayo:

① Kutarisira Kupisa uye Hupenyu Hwese Hwese Hwemudziyo

Mukushanda kwepulsed ine frequency yakakwira, duty cycle yakaderera zvinoreva nguva refu "yekudzima" pakati pepulses, izvo zvinobatsira kuti laser itonhore. Izvi zvinonyanya kubatsira mumashandisirwo ane simba rakawanda, uko kudzora duty cycle kunogona kuderedza kushushikana kwekupisa uye kuwedzera hupenyu hwemuchina.

② Simba reKuburitsa uye Kudzora Kusimba kweOptical

Kutenderera kwemudhudhudhu kwakakwira kunoita kuti pave nekubuda kweavhareji yakawanda kwemagetsi, nepo kutenderera kwemudhudhudhu kwakaderera kunoderedza simba reavhareji. Kugadzirisa kutenderera kwemudhudhudhu kunobvumira kugadziriswa kwesimba rekubuda pasina kuchinja peak drive current.

③ Kupindura KwemaSisitimu uye Kuchinja Masaini

Mukutaurirana kwemaziso uye masisitimu eLiDAR, duty cycle inokanganisa zvakananga nguva yekupindura uye zvirongwa zvemodulation. Semuenzaniso, mu pulsed laser ranging, kuisa duty cycle yakakodzera kunovandudza kuona echo signal, zvichiwedzera kururama kwekuyera uye frequency.

3. Mienzaniso yeKushandiswa kweDuty Cycle

① LiDAR (Kuona uye Kutarisa kweLaser)

Mumamodule e-laser e1535nm, gadziriro yekurova kwemoyo ine simba shoma, inotenderera zvakanyanya inowanzo shandiswa kuona kuti iri kure uye yakachengeteka. Mamodule ekushanda anowanzo dzorwa pakati pe0.1% ne1%, zvichienzanisa simba repamusoro-soro nekushanda kwakachengeteka uye kunotonhorera.

② MaLaser Ekurapa

Mukushandiswa kwakadai sekurapa kweganda kana kuvhiyiwa ne laser, maitiro akasiyana ekushanda anokonzera mhedzisiro dzakasiyana dzekupisa uye mhedzisiro yekurapa. Kushanda nesimba kunokonzera kupisa kwenguva refu, nepo kushanda nesimba kunotsigira kupiswa kwemhepo nekukurumidza.

③ Kugadziriswa Kwezvinhu Zvemaindasitiri

Mukumaka nekubatanidza nelaser, kutenderera kwebasa kunokanganisa mashandisirwo esimba muzvinhu. Kugadzirisa kutenderera kwebasa kwakakosha pakudzora kudzika kwekunyora uye kupinda kwekushandira.

4. Ungasarudza Sei Danho Rakakodzera Rebasa?

Kutenderera kwakakodzera kwebasa kunoenderana nekushandiswa kwacho uye hunhu hwe laser:

①Kutenderera Kwebasa Rakaderera (<10%)

Yakanakira mashandisirwo ekukurumidza, mapfupi ekukanda nhanho, akadai sekutarisa kana kunyora nemazvo.

②Kutenderera Kwebasa Repakati Nepakati (10%–50%)

Yakakodzera masisitimu elaser anodzokororwa zvakanyanya.

③Kutenderera Kwebasa Rakawanda (>50%)

Iri kusvika pakushanda kwemafungu anoenderera mberi (CW), anoshandiswa mumabasa akadai sekupomba kwemaziso uye kutaurirana.

Zvimwe zvinhu zvekufunga nezvazvo zvinosanganisira kugona kudzima kupisa, mashandiro emutyairi, uye kugadzikana kwekupisa kwelaser.

5. Mhedziso

Kunyangwe iri diki, duty cycle ndiyo chinhu chakakosha pakugadzira masystem e semiconductor laser. Haingokanganisi chete kugona kwekushanda asiwo kugadzikana kwenguva refu uye kuvimbika kwesystem. Mukugadzirwa nekushandiswa kwe laser mune ramangwana, kudzora kwakaringana uye kushandiswa kwakachinjika kwe duty cycle kuchave kwakakosha mukusimudzira kushanda zvakanaka kwesystem uye kubvumira hunyanzvi hutsva.

Kana muine mimwe mibvunzo nezve dhizaini yema parameter e laser kana mashandisirwo, musazeza kutibata kana kusiya mhinduro. Tiri pano kuti tikubatsirei!