BBO kristale
BBO ke kristale e ncha ea ultraviole frequency habeli. Ke kristale e mpe ea uniaxial, e nang le index e tloaelehileng ea refractive index (che) e kholo ho feta extraordinary refractive index (ne).Mefuta ka bobeli ea mofuta oa I le mofuta oa II e bapisang e ka fihlelleha ka ho tsamaisa angle.
BBO ke kristale e sebetsang hantle ea NLO bakeng sa moloko oa bobeli, oa boraro le oa bone oa harmonic oa Nd: YAG lasers, le kristale e ntle ka ho fetisisa ea NLO bakeng sa moloko oa bohlano oa harmonic ho 213nm.Matla a ho fetolela a fetang 70% bakeng sa SHG, 60% bakeng sa THG le 50% bakeng sa 4HG, le 200 mW tlhahiso ho 213 nm (5HG) a fumanoe, ka ho latellana.
BBO hape ke kristale e sebetsang hantle bakeng sa intracavity SHG ea matla a phahameng a Nd:YAG lasers.Bakeng sa intracavity SHG ea acousto-optic Q-switched Nd:YAG laser, matla a fetang 15 W a ho 532 nm a hlahisitsoe ke kristale ea BBO e koahetsoeng ke AR.Ha e pompeloa ke tlhahiso ea 600 mW SHG ea mode-locked Nd: YLF laser, tlhahiso ea 66 mW ka 263 nm e ile ea hlahisoa ho tsoa ho Brewster-angle-cut BBO ka har'a sekoti se ka ntle se matlafalitsoeng sa resonant.
BBO e ka boela ea sebelisoa bakeng sa lits'ebetso tsa EO. Lisele tsa BBO Pockels kapa EO Q-Switches li sebelisetsoa ho fetola boemo ba polarization ea leseli le fetang ho eona ha motlakase o sebelisoa ho li-electrode tsa electro-optic crystals tse kang BBO.Beta-Barium Borate ( β-BaB2O4, BBO ) e nang le li-charactors tse pepeneneng le mekhahlelo e ts'oanang ea mekhahlelo, li-coefficient tse kholo tse se nang moeli, moeli o moholo oa tšenyo le thepa e ntle haholo ea optical homogeneity le electro-optical properties li fana ka menyetla e khahlehang bakeng sa lisebelisoa tse sa tšoaneng tsa optical le electro-optic applications.
Likarolo tsa BBO Crystals:
• Mokhahlelo o pharalletseng o ka bapisoang ho tloha ho 409.6 nm ho isa ho 3500 nm;
• Sebaka se pharaletseng sa phetiso ho tloha 190 nm ho ea ho 3500 nm;
• Coefficient e kholo e sebetsang ea bobeli ea harmonic-generation (SHG) ka makhetlo a 6 ho feta ea kristale ea KDP;
• Moeli o phahameng oa tšenyo;
• Homogeneity e phahameng ea optical le δn ≈10-6 / cm;
• Mocheso o pharalletseng-bandwidth oa hoo e ka bang 55℃.
Tsebiso ea bohlokoa:
BBO e na le ts'oaetso e tlase ea mongobo.Basebelisi ba eletsoa ho fana ka maemo a omileng bakeng sa ts'ebeliso le poloko ea BBO.
BBO e batla e le bonolo, kahoo e hloka mehato ea ho sireletsa libaka tsa eona tse bentšitsoeng.
Ha ho hlokahala, ka kopo hopola hore BBO ea kamohelo e nyane.
| Mamello ea boholo | (W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm) (L≥2.5mm)(W±0.1mm)x(H±0.1mm)x(L+0.1/-0.1) limilimithara) (L<2.5mm) |
| Phapang e hlakileng | bohareng ba 90% ea bopharaHa ho litsela kapa litsi tsa ho hasana tse bonahalang ha li hlahlojoa ke laser e tala ea 50mW |
| Bophatlalatsi | ka tlase ho L/8 @ 633nm |
| Ho sotha ha maqhubu | ka tlase ho L/8 @ 633nm |
| Chamfer | ≤0.2mm x 45° |
| Chip | ≤0.1mm |
| Qhepa/ Cheka | betere ho feta 10/5 ho MIL-PRF-13830B |
| Ho bapisa | ≤20 arc metsotsoana |
| Perpendicularity | ≤5 arc metsotso |
| Ho mamellana le angle | ≤0.25 |
| Moeli oa tšenyo[GW/cm2] | >1 bakeng sa 1064nm, TEM00, 10ns, 10HZ (e betliloeng feela)>0.5 bakeng sa 1064nm, TEM00, 10ns, 10HZ (AR-coated)>0.3 bakeng sa 532nm, TEM00, 10ns, 10HZ (AR-coated) |
| Thepa ea motheo | |
| Sebopeho sa Crystal | Trigonal,Sehlopha sa Sebaka R3c |
| Lattice Parameter | a=b=12.532Å,c=12.717Å,Z=6 |
| Melting Point | Hoo e ka bang 1095 ℃ |
| Mohs Hardness | 4 |
| Botenya | 3.85 g/cm3 |
| Li-Coefficients tsa Katoloso ea Mocheso | α11=4 x 10-6/K;α33=36x 10-6/K |
| Thermal Conductivity Coefficients | ⊥c: 1.2W/m/K;//c: 1.6W/m/K |
| Transparency Range | 190-3500nm |
| SHG Phase Matchable Range | 409.6-3500nm (Mofuta oa I) 525-3500nm (Mofuta II) |
| Thermal-optic Coefficients (/℃) | dno/dT=-16.6x 10-6/℃ dne/dT=-9.3x 10-6/℃ |
| Li-coefficients tsa ho monya | <0.1%/cm(ho 1064nm) <1%/cm(ho 532nm) |
| Kamohelo ea Angle | 0.8mrad·cm (θ, Mofuta oa I, 1064 SHG) 1.27mrad·cm (θ, Mofuta oa II, 1064 SHG) |
| Kamohelo ea Mocheso | 55 ℃·cm |
| Kamohelo ea Spectral | 1.1nm·cm |
| Walk-off Angle | 2.7° (Mofuta oa I 1064 SHG) 3.2° (Mofuta oa II 1064 SHG) |
| NLO Coefficients | deff(I)=d31sinθ+(d11cos3Φ- d22 sin3Φ) cosθq deff (II)= (d11 sin3Φ + d22 cos3Φ) cos2θ |
| Lits'oaetso tsa NLO tse sa senyehang | d11 = 5.8 x d36(KDP) d31 = 0.05 x d11 d22 <0.05 x d11 |
| Sellmeier Equations (λ ka μm) | no2=2.7359+0.01878/(λ2-0.01822)-0.01354λ2 ne2=2.3753+0.01224/(λ2-0.01667)-0.01516λ2 |
| Li-coefficients tsa elektro-optic | γ22 = 2.7 pm/V |
| Half-wave voltage | 7 KV (ho 1064 nm,3x3x20mm3) |
| Mohlala | Sehlahisoa | Boholo | Boitloaelo | Bokaholimo | Thaba | Bongata |
| DE0998 | BBO | 10*10*1mm | θ=29.2° | Koahelo@800+400nm | E theotsoe | 1 |
| DE1012 | BBO | 10*10*0.5mm | θ=29.2° | Koahelo@800+400nm | φ25.4mm | 1 |
| DE1132 | BBO | 7*6.5*8.5mm | θ=22°mofuta1 | S1: Pcoating@532nm S2: Coating@1350nm | E theotsoe | 1 |
| DE1156 | BBO | 10*10*0.1mm | θ=29.2° | Koahelo@800+400nm | φ25.4mm | 1 |
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