IiCystals zePPKTP

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Iinkcukacha zeMveliso

Ngamaxesha athile i-poled potassium titanyl phosphate (PPKTP) yikristale ye-ferroelectric nonlinear enesakhiwo esisodwa esiququzelela ukuguqulwa kwamaza okwenziwa ngokufanelekileyo nge-quasi-phase-matching (QPM).Ikristale iqulethwe yimimandla etshintshanayo ene-polarizations echaseneyo ejolise ngokuchasayo, eyenza i-QPM ilungise ukungahambelani kwesigaba ekusebenzisaneni okungekho mgca.I-crystal inokulungelelaniswa ukuba ibe nokusebenza okuphezulu kuyo nayiphi na inkqubo engabonakaliyo ngaphakathi koluhlu lwayo olucacileyo.

Iimbonakalo:

Ukuguqulwa kwamaza okwenziwa ngokwezifiso ngaphakathi kwefestile enkulu ebonisa elubala (0.4 – 3 µm)
Umda womonakalo ophezulu we-optical wokuqina kunye nokuthembeka
Ukungahambelani okukhulu (d33=16.9 pm/V)
Ubude bekristale ukuya kuthi ga kwi-30 mm
Imingxuma emikhulu efumanekayo xa iceliwe (ukuya kuthi ga kwi-4 x 4 mm2)
Ukhetho lwe-HR kunye neengubo ze-AR zokuphucula ukusebenza kunye nokusebenza kakuhle
I-Aperiodic poling ekhoyo yococeko oluphezulu lweSPDC

Izinto ezilungileyo zePPKTP

Ukusebenza okuphezulu: i-poling ngamaxesha inokufikelela kwimpumelelo ephezulu yokuguqulwa ngenxa yokukwazi ukufikelela kwi-coefficient ephezulu engabonakaliyo kunye nokungabikho kokuhamba kwendawo.

I-Wavelength versatility: kunye nePPKTP kunokwenzeka ukufezekisa ukuhambelana kwesigaba kwindawo yonke ecacileyo yekristale.

Customizability: PPKTP ingenziwa ubunjineli ukuhlangabezana neemfuno izicelo 'ezithile.Oku kuvumela ulawulo phezu kwe-bandwidth, indawo yokushisa, kunye ne-polarizations yemveliso.Ngaphezu koko, ivumela intsebenziswano engahambelaniyo ebandakanya amaza aphikisanayo.

Iinkqubo eziqhelekileyo

Ukuguqulwa okuzenzekelayo kwe-parametric downconversion (SPDC) yi-workhorse ye-quantum optics, ivelisa iperi yefoton ephothiweyo (ω1 + ω2) ukusuka kwi-photon yegalelo elilodwa (ω3 → ω1 + ω2).Ezinye izicelo zibandakanya ukuveliswa kwelizwe elicinezelweyo, ukuhanjiswa kwesitshixo se-quantum kunye ne-ghost imaging.

Isizukulwana sesibini se-harmonic (SHG) siphinda kabini ukuphindaphinda kokukhanya kokufakwayo (ω1 + ω1 → ω2) ehlala isetyenziselwa ukuvelisa ukukhanya okuluhlaza kwiilaser ezimiselwe kakuhle malunga ne-1 μm.

Ukuveliswa kwesambuku (SFG) kuvelisa ukukhanya kunye nesambuku sokuphindaphinda kweendawo zokukhanya zegalelo (ω1 + ω2 → ω3).Usetyenziso lubandakanya ukubonwa kokuguqulwa, i-spectroscopy, i-biomedical imaging kunye nokuziva, njl.

Umahluko we-frequency generation (DFG) ivelisa ukukhanya kunye ne-frequency ehambelana nokwahlukana ngokuphindaphindiweyo kweendawo zokukhanya zegalelo (ω1 - ω2 → ω3), ukubonelela ngesixhobo esiguquguqukayo soluhlu olubanzi lwezicelo, ezifana ne-optical parametric oscillators (OPO) kunye i-optical parametric amplifiers (OPA).Ezi zisetyenziswa ngokuqhelekileyo kwi-spectroscopy, imvakalelo kunye nonxibelelwano.

I-oscillator yeparametric oscillator ye-wave backward wave (BWOPO), ifezekisa ukusebenza kakuhle ngokukwahlula i-photon yempompo ukuya phambili nasemva kweefotoni ezisasazayo (ωP → ωF + ωB), evumela ukuhanjiswa kwempendulo ngaphakathi kwijometri ephikisanayo.Oku kuvumela uyilo lwe-DFG elomeleleyo kunye necwebileyo enoguqulo olusulungekileyo.

Ukuodola ulwazi

Nika olu lwazi lulandelayo kwisicatshulwa:

Inkqubo enqwenelekayo: igalelo wavelength(s) kunye nemveliso yamaza
Igalelo kunye nemveliso polarizations
Ubude beCrystal (X: ukuya kuthi ga kwi-30 mm)
Umngxuma obonakalayo (W x Z: ukuya kuthi ga kwi-4 x 4 mm2)
AR / HR-coatings

Iinkcukacha:

	Min	Max
Ubude obuphakathi	390 nm	3400 nm
Ixesha	400 nm	-
Ukutyeba (z)	1 mm	4 mm
Ububanzi bokulinganisa (w)	1 mm	4 mm
Ububanzi beCrystal (y)	1 mm	7 mm
Ubude beCrystal (x)	1 mm	30 mm