Itsinda ryabashinwa ryateje umurongo wa 1.2μm band-power-tunable Raman fibre laser

Itsinda ryabashinwa ryateje umurongo wa 1.2μm band-power-tunable Ramanlaser

Inkomoko ya Lasergukorera muri bande ya 1.2μm bifite porogaramu zidasanzwe mubuvuzi bwa fotodinamike, kwisuzumisha biomedical, hamwe no kumva ogisijeni. Mubyongeyeho, zirashobora gukoreshwa nkisoko ya pompe kugirango ibe igereranya urumuri rwagati rwagati no kubyara urumuri rugaragara mukubye kabiri. Lazeri muri 1.2 μm band yagezweho hamwe bitandukanyeUrwego rukomeye, harimoicyuma gikoresha, diyama ya Raman, na fibre. Muri izi lazeri eshatu, fibre laser ifite ibyiza byuburyo bworoshye, ubwiza bwibiti byiza nibikorwa byoroshye, ibyo bikaba ari amahitamo meza yo kubyara 1.2 mm ya bande.
Vuba aha, itsinda ry’ubushakashatsi riyobowe na Porofeseri Pu Zhou mu Bushinwa ryifuza ingufu za fibre zifite ingufu nyinshi mu itsinda rya 1,2 mm. Amashanyarazi yo hejurulaserini cyane cyane ytterbium-dope fibre lazeri mumurongo wa 1 mkm, kandi ingufu nyinshi zisohoka mumurongo wa 1.2 μm zigarukira kurwego rwa 10 W. Igikorwa cabo, cyiswe "High power tunable Raman fibre laser kuri 1.2μm waveband," yari byatangajwe mu mbibi zaAmashanyarazi.

FIG. 1:. PDF: fibre ya fosifore; QBH: Ubwinshi bwa Quartz; WDM: Igabana ry'umurongo wa multiplexer; SFS: superfluorescent fibre yumucyo; P1: icyambu 1; P2: icyambu 2. P3: yerekana icyambu 3. Inkomoko: Zhang Yang n'abandi.
Igitekerezo ni ugukoresha imbaraga za Raman zogukwirakwiza muri fibre passiyo kugirango ubyare lazeri ifite ingufu nyinshi mumutwe wa 1.2μm. Gukwirakwiza Raman gutatanya ningaruka ya gatatu itondekanya umurongo uhindura fotone kumurongo muremure.

Igishushanyo 2: Impinduka zidasanzwe za RFL zisohoka kuri (a) 1065-1074 nm na (b) uburebure bwa pompe 1077 nm (Δλ bivuga umurongo wa 3 dB). Inkomoko: Zhang Yang n'abandi.
Abashakashatsi bifashishije imbaraga zo gukwirakwiza Raman muri fibre ya fosifore kugirango bahindure fibre ytterbium ifite imbaraga nyinshi kuri 1 mkm kuri bande 1,2 mm. Ikimenyetso cya Raman gifite ingufu zigera kuri 735.8 W cyabonetse kuri 1252.7 nm, nizo mbaraga zisohoka cyane ya 1.2 μm fibre fibre laser yavuzwe kugeza ubu.

Igishushanyo 3: (a) Imbaraga ntarengwa zisohoka hamwe nibisanzwe bisohoka muburyo butandukanye bwumurongo wikimenyetso. (b) Ibisohoka byuzuye muburyo butandukanye bwerekana ibimenyetso, muri dB (Δλ bivuga umurongo wa 3 dB). Inkomoko: Zhang Yang n'abandi.

Igishushanyo: 4: (a) Ikirangantego na (b) ibiranga ubwihindurize bwimbaraga ziranga imbaraga nyinshi zihinduranya imbaraga za Raman fibre amplifier kumupompo wumurambararo wa 1074 nm. Inkomoko: Zhang Yang n'abandi.