Wata ƙungiyar China ta ƙirƙiro wani na'urar laser mai ƙarfin gaske mai ƙarfin Raman mai girman 1.2μm.

Wata ƙungiyar 'yan China ta ƙirƙiro wani ƙaramin rukuni mai ƙarfin gaske mai suna Raman mai ƙarfin sauti mai girman 1.2μm.Laser ɗin fiber

Tushen LaserSuna aiki a cikin band 1.2μm suna da wasu aikace-aikace na musamman a cikin maganin photodynamic, ganewar asali na biomedical, da kuma gano iskar oxygen. Bugu da ƙari, ana iya amfani da su azaman tushen famfo don samar da haske na tsakiyar infrared da kuma samar da haske mai gani ta hanyar ninka mita. An cimma lasers a cikin band 1.2 μm ta hanyoyi daban-dabanlasers masu ƙarfi, ciki har daLasers na semiconductor, laser Raman lu'u-lu'u, da kuma laser ɗin fiber. Daga cikin waɗannan laser guda uku, laser ɗin fiber yana da fa'idodin tsari mai sauƙi, ingancin hasken rana mai kyau da kuma aiki mai sassauƙa, wanda hakan ya sa ya zama mafi kyawun zaɓi don samar da laser mai girman 1.2μm.
Kwanan nan, ƙungiyar bincike ƙarƙashin jagorancin Farfesa Pu Zhou a China tana sha'awar amfani da na'urorin laser masu ƙarfin gaske a cikin band ɗin 1.2μm.na'urorin laserGalibinsu lasers ne da aka yi da ytterbium a cikin band 1 μm, kuma matsakaicin ƙarfin fitarwa a cikin band 1.2 μm yana iyakance ga matakin 10 W. Aikinsu, mai taken "Laser fiber Raman mai ƙarfi mai iya gyarawa a 1.2μm waveband," an buga shi a cikin Frontiers ofOptoelectronics.

HOTO NA 1: (a) Saitin gwaji na amplifier na fiber Raman mai ƙarfi da za a iya gyarawa da kuma (b) laser iri na Raman mai iya gyarawa a band 1.2 μm. PDF: fiber mai ɗauke da phosphorus; QBH: Quartz bulk; WDM: Multiplexer na rarraba Wavelength; SFS: tushen hasken fiber mai haske sosai; P1: tashar jiragen ruwa ta 1; P2: tashar jiragen ruwa ta 2. P3: yana nuna tashar jiragen ruwa ta 3. Tushe: Zhang Yang et al., Laser fiber Raman mai ƙarfi da za a iya gyarawa a band 1.2μm, Frontiers of Optoelectronics (2024).
Manufar ita ce a yi amfani da tasirin watsawar Raman da aka ƙarfafa a cikin zare mai aiki don samar da laser mai ƙarfi a cikin band na 1.2μm. Rawarwar Raman da aka ƙarfafa wani tasiri ne na uku wanda ba shi da layi wanda ke canza photons zuwa tsayin tsayi.

Hoto na 2: Siginar fitarwa ta RFL mai canzawa a (a) 1065-1074 nm da (b) raƙuman famfo na 1077 nm (Δλ yana nufin faɗin layi na 3 dB). Tushe: Zhang Yang da sauransu, Laser ɗin fiber na Raman mai ƙarfi mai iya canzawa a 1.2μm waveband, Frontiers of Optoelectronics (2024).
Masu binciken sun yi amfani da tasirin watsawar Raman da aka ƙarfafa a cikin zaren phosphorus don canza zaren ytterbium mai ƙarfi a band 1 μm zuwa band 1.2 μm. An sami siginar Raman mai ƙarfin har zuwa 735.8 W a 1252.7 nm, wanda shine mafi girman ƙarfin fitarwa na laser fiber band 1.2 μm da aka ruwaito zuwa yanzu.

Hoto na 3: (a) Matsakaicin ƙarfin fitarwa da kuma daidaitaccen bakan fitarwa a tsayin sigina daban-daban. (b) Cikakken bakan fitarwa a tsayin sigina daban-daban, a cikin dB (Δλ yana nufin faɗin layi na 3 dB). Tushe: Zhang Yang et al., Laser fiber Raman mai ƙarfi mai iya canzawa a tsayin waveband na 1.2μm, Frontiers of Optoelectronics (2024).

Hoto:4: (a) Sifofin Spectrum da (b) halayen juyin halittar wutar lantarki na amplifier mai ƙarfin gaske na Raman fiber a tsawon famfo na 1074 nm. Tushe: Zhang Yang da sauransu, Laser mai ƙarfin gaske na Raman fiber a 1.2μm waveband, Frontiers of Optoelectronics (2024)