Amakristalu e-AgGaSe2 — Ama-Band Edges Ku-0.73 kanye No-18 µm
Incazelo Yomkhiqizo
Ukushuna phakathi kuka-2.5–12 µm kutholwe uma kuphanjwa nge-laser ye-Ho:YLF ku-2.05 µm; kanye nokusebenza okungabalulekile kwesigaba sokufanisa (NCPM) phakathi kuka-1.9–5.5 µm uma iphampu ngo-1.4–1.55 µm. I-AgGaSe2 (AgGaSe) ikhonjiswe ukuthi iyikristalu esebenza ngokuphindwe kabili esebenza kahle emisebe ye-infrared CO2 lasers.
Ngokusebenza ngokuhlanganiswa nama-oscillator asetshenziswayo asebenza ngokuhambisana (ama-SPOPO) atholakala ngokwentengiso kumbuso we-femtosecond kanye ne-picosecond, amakristalu e-AgGaSe2 abonise ukusebenza ngempumelelo ekuguquleni okungeyona umugqa wepharamethikhi (i-difference frequency generation, DGF) esifundeni esimaphakathi ne-IR. Ikristalu ye-IR engaqondile ye-AgGaSe2 inesibalo esikhulu kakhulu sokufaneleka (70 pm2/V2) phakathi kwamakristalu afinyeleleka ngokwezentengiso, aphindwe kasithupha kune-AGS elinganayo. I-AgGaSe2 futhi iyathandeka kunamanye amakristalu amaphakathi ne-IR ngenxa yezizathu ezithile ezithile. I-AgGaSe2, ngokwesibonelo, inohambo oluphansi lwendawo futhi ayitholakali kalula ukuthi ilashelwe izinhlelo zokusebenza ezithile (isibonelo, ukukhula nokusika), nakuba inomugqa omkhulu kanye nendawo esobala elinganayo.
Izinhlelo zokusebenza
● Isizukulwane sesibili se-harmonics ku-CO ne-CO2 - amalaser
● I-oscilator ye-Optical parametric
● Ijeneretha yefrikhwensi eyahlukene ukuya ezindaweni ezimaphakathi ne-infrared kufika ku-17 mkm.
● Ukuxuba imvamisa endaweni emaphakathi ye-IR
Izakhiwo Eziyisisekelo
| Isakhiwo Sekristalu | I-Tetragonal |
| Amapharamitha weseli | a=5.992 Å, c=10.886 Å |
| I-Melting Point | 851 °C |
| Ukuminyana | 5.700 g/cm3 |
| Mohs Ukuqina | 3-3.5 |
| I-Absorption Coefficient | <0.05 cm-1 @ 1.064 µm <0.02 cm-1 @ 10.6 µm |
| I-Relative Dielectric Constant @ 25 MHz | ε11s=10.5 ε11t=12.0 |
| Ukunwetshwa kwe-Thermal I-Coefficient | ||C: -8.1 x 10-6 /°C ⊥C: +19.8 x 10-6 /°C |
| I-Thermal Conductivity | 1.0 W/M/°C |
