Gulu la ku China lapanga laser ya Raman fiber yosinthika ya 1.2μm

Gulu la ku China lapanga Raman yosinthika yamphamvu kwambiri ya 1.2μmlaser ya ulusi

Magwero a laserMa laser omwe amagwira ntchito mu gulu la 1.2μm ali ndi ntchito zapadera mu chithandizo cha photodynamic, diagnostics ya zamankhwala, ndi oxygen sensing. Kuphatikiza apo, angagwiritsidwe ntchito ngati magwero a pampu popanga parametric ya kuwala kwa mid-infrared komanso popanga kuwala kowoneka mwa kuwirikiza kawiri pafupipafupi. Ma laser mu gulu la 1.2 μm apangidwa ndi mitundu yosiyanasiyana.ma laser olimba, kuphatikizapoma laser a semiconductor, ma laser a diamondi Raman, ndi ma laser a fiber. Pakati pa ma laser atatuwa, fiber laser ili ndi ubwino wa kapangidwe kosavuta, khalidwe labwino la beam komanso ntchito yosinthasintha, zomwe zimapangitsa kuti ikhale chisankho chabwino kwambiri chopanga 1.2μm band laser.
Posachedwapa, gulu lofufuza lotsogozedwa ndi Pulofesa Pu Zhou ku China likufuna kudziwa za ma laser amphamvu kwambiri omwe ali mu gulu la 1.2μm. Ulusi wamphamvu kwambiri womwe ulipo panopama laserMakamaka ndi ma laser a ulusi opangidwa ndi ytterbium mu gulu la 1 μm, ndipo mphamvu yayikulu yotulutsa mu gulu la 1.2 μm imangokhala pamlingo wa 10 W. Ntchito yawo, yotchedwa "Laser ya ulusi ya Raman yosinthika kwambiri pa gulu la mafunde la 1.2 μm," idasindikizidwa mu Frontiers ofZipangizo zamagetsi.

CHITHUNZI 1: (a) Kukhazikitsa koyesera kwa amplifier ya Raman fiber yomwe imatha kusinthidwa ndi mphamvu yayikulu komanso (b) laser ya Raman fiber seed laser yomwe imatha kusinthidwa pa 1.2 μm band. PDF: ulusi wopangidwa ndi phosphorous; QBH: Quartz bulk; WDM: Wavelength division multiplexer; SFS: superfluorescent fiber light source; P1: port 1; P2: port 2. P3: ikuwonetsa port 3. Gwero: Zhang Yang et al., Laser ya Raman fiber yomwe imatha kusinthidwa ndi mphamvu yayikulu pa 1.2μm waveband, Frontiers of Optoelectronics (2024).
Lingaliro ndikugwiritsa ntchito mphamvu yoyambitsa kufalikira kwa Raman mu ulusi wopanda mphamvu kuti apange laser yamphamvu kwambiri mu gulu la 1.2μm. Kufalikira kwa Raman kolimbikitsidwa ndi mphamvu yachitatu yopanda mzere yomwe imasintha ma photon kukhala ma wavelength ataliatali.

Chithunzi 2: Ma spectra otulutsa a RFL osinthika pa (a) 1065-1074 nm ndi (b) ma wavelengths a pampu ya 1077 nm (Δλ amatanthauza m'lifupi mwa mzere wa 3 dB). Gwero: Zhang Yang et al., Laser ya Raman fiber yosinthika yamphamvu kwambiri pa 1.2μm waveband, Frontiers of Optoelectronics (2024).
Ofufuzawo adagwiritsa ntchito mphamvu yoyambitsa kufalikira kwa Raman mu ulusi wopangidwa ndi phosphorous kuti asinthe ulusi wopangidwa ndi ytterbium wamphamvu kwambiri pa gulu la 1 μm kukhala gulu la 1.2 μm. Chizindikiro cha Raman chokhala ndi mphamvu yofika 735.8 W chinapezeka pa 1252.7 nm, yomwe ndi mphamvu yotulutsa yapamwamba kwambiri ya laser ya ulusi wa 1.2 μm yomwe yanenedwa mpaka pano.

Chithunzi 3: (a) Mphamvu yayikulu yotulutsa ndi sipekitiramu yotulutsa yokhazikika pamafunde osiyanasiyana a chizindikiro. (b) Sipekitiramu yonse yotulutsa pamafunde osiyanasiyana a chizindikiro, mu dB (Δλ imatanthauza m'lifupi mwa mzere wa 3 dB). Gwero: Zhang Yang et al., Laser ya Raman fiber yosinthika yamphamvu kwambiri pa 1.2μm waveband, Frontiers of Optoelectronics (2024).

Chithunzi :4: (a) Makhalidwe a Spectrum ndi (b) mphamvu ya amplifier ya Raman fiber amplifier yamphamvu kwambiri yosinthika pa nthawi yopumira ya 1074 nm. Gwero: Zhang Yang et al., Laser ya Raman fiber laser yamphamvu kwambiri yosinthika pa 1.2μm waveband, Frontiers of Optoelectronics (2024)