BBO (Beta-Barium borate los yog β-BaB2O4) yog ntau yam tsis-linear optical muaju ua tsaug rau nws cov cim nta, piv txwv li. sab kis, thiab theem sib txuam ua ke, loj non-linear coefficient, puas siab puas ntsws loj heev, thiab hom kev xaiv zoo heev.
BBO Crystal tau loj dua thib ob harmonic cim (SHG) coefficient txog 6 lub sij hawm ntau tshaj li ntawm KDP pob zeb, zoo li cov nplua nuj electro-optic siv nyob rau hauv daim ntawv thov lub siab zog laser system.
BBO Crystals tus NLO Crystal npaum li cas siv hauv cov las las Tuners: Dye lasers, Ultrafast mem tes lasers, Ti: Sapphire thiab Alexandrite lasers, Argon Ion thiab Copper-Vapor lasers. BBOs OPO thiab OPA yog cov cuab yeej muaj zog rau kev ua kom muaj kev sib haum sib haum ntawm cov UV mus rau IR.
Muaj lwm daim ntawv ntawm BBO nrog cov qauv siv lead ua sib txawv, uas yog hu ua alpha-BBO, hu ua a-BBO. Alpha-BBO yog ib qho zoo siv UV ua ib qho kev siv lead ua thiab siv dav hnub no hauv UV polarizing prism. BBO cov nplais kuj siv los ua cov khoom siv hluav taws xob hauv ntau lub hlwb thiab modulators. Honour Optics yog cov kws tshaj lij kev lag luam loj loj BBO nonlinear Crystal Chaw tsim khoom, yuav tus nqi qis BBO nonlinear Crystal nyob rau hauv Hoobkas nqi.
Honour Optics manufactures cov hom I thiab II II BBO muaju rau SHG /THG /4HG /5HG daim ntaub ntawv, peb cov Crystalline BBO ntev ntawm 0.005mm mus rau 25mm thiab loj txog 15 x 15 x 15mm, nrog P-coatings los yog AR coatings. Peb yuav muab nyias CryO siv lead ua nrog 0.005 mm thickness. Peb kuj muab cov kev pab polishing thiab rov ua hauj lwm.
1. Sab Phem Sib Txuam Sib Pauv ntawm 409.6 nm rau 3500 nm
2. Kev kho mob kis tau yooj yim ntawm 190 nm rau 3500 nm
3. Kev loj hlob zoo tshaj qub thib ob (SHG) coefficient
4. Puag siab loj tshaj 10 GW /cm2 rau 100 ps nyiaj-dav ntawm 1064 nm
5. Kev kub siab-qhov sib txawv ntawm 55 ℃
6. Khoom zoo nkauj thiab lub zog
BBO yog ib qho siv tawv siv nonlinear rau qhov thib ob (SHG), thib peb (THG) thiab plaub (4HG) harmonic tiam ntawm Nd: YAG lasers; thiab yog qhov siv lead ua siv tau rau tsib (5HG) harmonic cim ntawm 213nm. Hloov cov txiaj ntsim ntawm ntau tshaj 70% rau SHG, 60% rau THG thiab 50% rau 4HG, thiab 200 mW tso tawm ntawm 213nm (5HG) tau muab tau raws li. Vim kev ua haujlwm zoo tshaj plaws hauv BBOS, tsis muaj hygroscopic tom qab txheej, thiab loj loj muaj, nws hloov KDP hauv feem ntau zaus ntawm doubling Nd: YAG lasers.
Kev cai BBO nonlinear Crystal kuj yog ib qho siv lead ua rau cov SHG uas muaj siab zog Nd: YAG lasers. Rau lub intracavity SHG ntawm ib qho acousto-optic Q-switched Nd: YAG laser, ntau dua 15W nruab nrab zog ntawm 532nm raug generated ntawm peb AR-coated BBO Crystal. Thaum nws pumped los ntawm 600mW SHG tso zis ntawm hom xauv Nd: YLF laser, 66mW tso zis thaum 263nm tau ua los ntawm Brewster-angle-cut BBO nyob rau hauv ib qho kev kho zoo dua qub resonant kab noj hniav.
Vim tias qhov kev txais me me thiab qhov kev tawm tsam loj, qhov zoo zoo laser beam yog qhov tseem ceeb rau BBO los ua kom muaj kev hloov siab rau. Zoo siab txais tos txhua tus los ua cov khoom siv los ua cov Khoom Muag Qoob Ntiaj Teb Nonlinear.
| Crystal Structure | trigonal, space group R3c |
| Cell Parameters | a = b = 12.532Ä, c = 12.717Ä, Z = 6 |
| Melting Point | 1095 +/-5°C |
| Transition Temperature | 925 +/-5°C |
| Optical Homogeneity | Dn ≈10-6/cm |
| Hardness | 4.5 Mohs |
| Density | 3.85 g/cm3 |
| Absorption Coefficient | < 0.1%/cm (at 1064 nm) |
| Hygroscopic Susceptibility | low |
| Resistivity | > 1011 ohm-cm |
| Relative Dielectric Constant | eT11/e0: 6.7, eT33/e0: 8.1 Tan d, < 0.001 |
| Thermal Expansion Coefficients(in the range of 25°C- 900°C) | a, 4 x 10-6/K c, 36 x 10-6/K |
| Thermal Conductivity | ^c, 1.2 W/m/K; ||c, 1.6 W/m/K |
Honors BBO yog dav siv rau hauv Dye lasers. Muaj ntau yam kuv tau ua tiav ntawm 780-950nm thiab 248,5nm (SHG tso tawm ntawm 495nm xim laser) hauv BBO, qhov UV tshaj plaws ntawm 188.9nm mus rau 197 nm thiab lub zog ntawm 95mJ ntawm 193nm thiab 8mJ ntawm 189nm zog tau txais feem.
Zaus-doubling thiab tripling ntawm ultrashort-mem tes lasers yog daim ntawv sau npe uas BBO qhia superior khoom mus rau KDP thiab ADP muaju. Peb yuav muab li nyias li 0.005 hli BBO rau qhov laj thawj no. Lub 10 lbs laser pulse luv tau nrawm zaus-ob zaug nrog ib tus nyias BBO, raws li ntawm ob theem-tshaj tawm thiab pab pawg neeg-tshaj tawm txuam.
UV cov zis hauv cheeb tsam 360nm - 390 nm nrog pulse zog ntawm 105 mJ (31% SHG efficiency) ntawm 378 nm, thiab tsim tawm hauv thaj av 244nm - 259nm nrog 7.5mJ (24% mixing efficiency) tau txais rau hom I SHG thiab THG ntawm tus Alexandrite laser hauv BBO nonlinear siv lead ua. Ntau tshaj 50% ntawm SHG conversion efficiency hauv ib Ti: Sapphire laser tau tau. High conversion efficiencies kuj tau rau THG thiab 4HG ntawm Ti: Sapphire lasers.
Los ntawm kev siv cov txheej txheem ntawm kev sib tw-twv txheej txheem hauv qhov Argon Ion laser nrog tag nrho cov kab zis muaj peev xwm ntawm 2W, siab tshaj plaws 33mW ntawm 250.4 nm thiab peb caug-rau kab ntawm sib sib zog nqus UV wavelengths xws li ntawm 228.9 nm rau 257.2 nm raug tsim tawm hauv B-cut BBO siv lead ua Mus txog 230 mW nruab nrab zog hauv UV ntawm 255.3 nm nrog qhov siab tshaj 8.9% kev hloov ua tiav tau ua tiav rau SHG ntawm tus tooj liab-Vapor laser ntawm 510.6 nm.
| Phase-matchable SHG range | 189-1750nm |
| NLO coefficients | d11 = 5.8 x d36(KDP) d11 = 0.05 x d11, d22< 0.05 x d11 |
| Electro-Optic Coefficients | g11 = 2.7 pm/V, g22, g31< 0.1 g11 |
| Half-Wave Voltage | 48 KV (at 1064 nm) |
| Damage Threshold at 1.064 mm at 0.532 mm |
5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns)1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps) |
| Transparency Range | 189 - 3500 nm |
| Refractive Indices at 1.0642 mm at 0.5321 mm at 0.2660 mm |
ne = 1.5425, no = 1.6551 ne = 1.5555, no = 1.6749 ne = 1.6146, no = 1.7571 |
| Therm-Optic Coefficients | dno/dT = - 9.3 x 10-6/°C dne/dT = -16.6 x 10-6/°C |
| Sellmeier Equations: | no2(l) = 2.7359+0.01878/(l2-0.01822)-0.01354 l 2 ne2(l) = 2.3753+0.01224/(l2-0.01667)-0.01516 l 2 |
Lub OPO thiab OPA ntawm BBO yog cov cuab yeej muaj zog rau kev ua kom pom dav dav kom haum ntawm cov UV mus IR. Lub kaum ntse ntse nyob ntawm hom I thiab hom II BBO OPO thiab OPA tau raug muab xam nrog, cov ntsiab lus pom hauv qab cov duab.
Tus OPO tso zis xws li ntawm 680nm rau 2400nm nrog lub ncov zog ntawm 1.6MW thiab mus txog rau 30% zog conversion efficiency tau hauv lub 7.2 hli ntev hom Kuv BBO. Lub zog twj tso kua mis yog 40mJ ntawm 532nm nrog mem tes-dav 75ps. Nrog lub siv lead ua ntev, yuav tsum muaj kev hloov siab dua siab dua.
Nyob rau hauv cov ntaub ntawv ntawm Nd: YAG siv, BBOs OPOs yuav tsim tawm ntau tshaj 100mJ, nrog wavelength tunable ntawm 400nm rau 2000nm. Los ntawm Honour tus BBO nonlinear siv lead ua, OPO txoj haujlwm npog ib qho nyob ntawm 400nm mus rau 3100nm uas yog qhov siab tshaj plaws ntawm 30% thiab tshaj 18% kev hloov dua siab tshiab, tshaj lub wavelength ntawm 430nm txog 2000nm.
Hom II BBO siv tau los txo cov linewidth uas nyob ze cov ntsiab lus degenerate. Ib txoj hlua raws li nqaim li 0.05nm thiab kev hloov pauv ntawm 12% tau. Txawm li cas los, ntev dua (> 15mm) BBO yuav tsum siv los txo qhov oscillation threshold thaum uas siv cov tswv yim II theem sib txuam.
Pumping nrog ib picosecond Nd: YAG ntawm 355 nm, ib nqaim-qhab (< 0.3nm), siab zog (> 200μJ) thiab dav tunable (400nm rau 2000nm) mem tes tau ua los ntawm BBOs OPAs. Qhov no OPA tuaj yeem ncav cuag li siab tshaj 50% ntawm kev hloov dua siab tshiab, thiab yog li ntawd, yog qhov zoo tshaj plaws Dye lasers nyob rau ntau qhov chaw, nrog rau kev ua haujlwm, qhov ntau, kev kho, thiab qhov tsim kom yooj yim tsim thiab ua haujlwm. Txuas ntxiv, coherent radiation ntawm 205 nm rau 3500 nm kuj tau tsim los ntawm BBOs OPO los yog OPA ntxiv rau BBO rau SHG.
Lub OPO tunable nrog teeb liab wavelengths ntawm 422nm thiab 477nm tau raug tsim los ntawm lub kaum ntse ntse nyob hauv ib hom I BBO siv lead ua pumped nrog XeCl excimer laser ntawm 308 nm. Thiab lub BBOs OPO pumped los ntawm plaub harmonic ntawm tus Nd: YAG laser (ntawm 266nm) tau raug cai los npog tag nrho ntau yam ntawm cov zis wavelengths 330nm - 1370nm.
Thaum pumped los ntawm ib tug 1mJ, 80fs Dye laser ntawm 615nm, lub OPA nrog ob pawg liab BBO yields ntau dua 50μJ (ntau 130μJ), < 200 fs ultrashort mem tes, dhau 800nm - 2000nm.
Kev siv BBO nonlinear Crystal kuj siv tau rau cov ntawv thov E-O. Nws muaj ntau txoj kev sib kis ntawm UV mus txog 3500nm. Thiab nws muaj kev puas tsuaj ntau dua li KD * P lossis LiNbO3. Ntau tshaj 80W tso zis muaj zog thiab 50KHz repetition tus nqi tau raug pom los ntawm kev siv Honors E-O BBO tus Ntsuas thiab Nd: YVO4 muaj li tau txais xov xwm. Ntawm 5KHz, nws cov mem tes muaj qhov dav li tsawg tshaj li 6.4ns, thiab zog ntawm 5.7 mJ los yog ncov zog ntawm 900KW. Nws muaj qhov zoo dua ntawm A-O Q-pauv ib qho, nrog rau lub plauv luv luv, kev nqus siab zoo, thiab kev cog lus loj npaum li cas. Txawm hais tias nws muaj ib tus txheeb ze me me electro-optic coefficient, thiab nws qhov nrab-wave voltage siab (7KV ntawm 1064nm, 3x3x20mm3), ntev thiab thev BBO tuaj yeem txo qhov uas yuav tsum tau muaj hluav taws xob. Honour Optics tam sim no muaj peev xwm muab 25 hli ntev thiab 1mm nyias siab kho qhov muag zoo ntawm BBO siv lead ua nrog Z-ntuag, AR-coated thiab Kub /Chrome plated sab sab.
Dual Band AR-txheej (DBAR) ntawm BBO rau SHG ntawm 1064nm; tsis txaus siab (R < 0.2% ntawm 1064nm thiab R < 0.5% ntawm 532nm); siab puas ntsoog loj tshaj (> 300MW /cm2 ntawm ob lub wavelengths); Ntev ntev ntev.
Broad Band AR-txheej (BBAR) ntawm BBO rau SHG ntawm tunable lasers.
Broad Band P-txheej ntawm BBO rau kev siv OPO.
Lwm cov coatings muaj thaum thov.
Dimension Tolerance ---------------- (W ± 0.05mm) x (H ± 0.05mm) x (L +/- 0.1mm)
Angle Tolerance ---------------------- △ θ < 0.25 °, △ Φ < 0.25 °
Clear Aperture ----------------------- central 95% ntawm lub taub
Nto Caij Ntaus -------------------- < λ /10 ntawm 633nm
Wavefront Distortion --------------- < λ /10 @ 633nm
Kuv xav tias
Nto Zoo (S /D) --------------- 10/5
Parallelism ---------------------------- < 10 cov phiajcim cuav
Perpendicularity --------------------- < 5 arc feeb
Coatings: Kev tiv thaiv (P) thiab Anti-reflection (AR) txheej muaj raws li tus neeg thov kev pab
Ua kom muaj kev txav ------------------> 1 GW /cm2 rau 1064nm, TEM00, 10ns, 10HZ (polished nkaus xwb)
> 0.5 GW /cm2 rau 1064nm, TEM00, 10ns, 10HZ (AR-coated)
> 0.3 GW /cm2 rau 532nm, T EM00, 10ns, 10HZ (AR-coatd)
Peb tuaj yeem hloov kho lub qia pobzeb thiab luaj li tsuas tshwj cov qauv tshwj xeeb raws li koj qhov kev thov. Nws muaj caij rov qab rau polishing thiab txheej rau BBO tus ntxhiab uas koj muab rau peb. Zoo siab txais tos txhua tus los ua cov khoom siv los ua cov Khoom Muag Qoob Ntiaj Teb Nonlinear
Qhov thib ob, thib peb, thib plaub, thiab thib tsib kev sib raug zoo ntawm Nd: YAG thiab Nd: YLF lasers
Zaus-doubling, -tsis thiab -mixing ntawm Dye Lasers
Qhov thib ob, thib peb thiab plaub qhov kev sib raug zoo ntawm Ti: Sapphire thiab Alexandrite lasers
Optical parametric amplifier (OPA) thiab kho qhov muag optical parameter oscillators (OPO)
Zaus-doubling ntawm Argon ion, Cu-vapor thiab Ruby lasers.
1. Harmonic tiam ntawm Nd: YAG lasers:
1064nm SHG - > 532nm: 4x4x7mm Hom Kuv, θ = 22.8 °, φ = 0 °;
1064nm THG- > 355nm: 4x4x7mm Hom Kuv, θ = 31.3 °, φ = 0 °; Hom II q = 38.6 °, φ = 30 °
1064nm 4HG -> gt; 266nm: 4x4x7mm Hom Kuv, θ = 47.6 °, φ = 0 °;
1064nm 5HG -> gt; 213nm: 4x4x7mm Hom Kuv, θ = 51.1 °, φ = 0 °;
2. OPO thiab OPA pumped los ntawm harmonics ntawm Nd: YAG lasers
532nm Twj Tso Dej - > 680-2600nm: 8x6x12mm Hom Kuv, θ = 21 °, φ = 0 °;
355nm Pump - > 410-2600nm: 8x6x12mm Hom Kuv, θ = 30 °, φ = 0 °; Hom II, q = 37 °, φ = 30 °;
266nm Pump - > 295-2600nm: 8x6x12mm Hom Kuv, θ = 39 °, φ = 0 °;
3. Lub sijhawm twvtxiaj ntawm qhov muag lasers
670-530nm SHG - > 335-260nm: 8x4x7mm Hom Kuv, θ = 40 °, φ = 0 °;
600-440nm SHG - > 300-220nm: 8x4x7mm Hom Kuv, θ = 55 °, φ = 0 °;
444-410nm SHG - > 222-205nm: 8x4x7mm Hom Kuv, θ = 80 °, φ = 0 °;
4. Harmonic tiam ntawm Ti: Sapphire lasers
700-1000nm SHG - > 350-500nm: 5x5x0.2mm Hom I, θ = 28 °, φ = 0 °;
700-1000nm THG- > 240-330nm: 5x5x0.2mm Hom I, θ = 42 °, φ = 0 °;
700-1000nm FHG- > 210-240nm: 5x5x0.2 hli Hom I, θ = 66 °, φ = 0 °;
5. Lub sij hawm twv thiab tripling ntawm alexandrite lasers
720-800nm SHG - > 360-400nm: 6x4x7mm Hom Kuv, θ = 31 °, φ = 0 °;
720-800nm THG- > 240-265nm: 6x4x7mm Hom Kuv, θ = 48 °, φ = 0 °;
6. Intracavity SHG ntawm Ar + laser nrog Brewster kaum-cut BBO Crystal
514nm SHG - > 257nm: 4x4x7mm Hom I, θ = 51 °, φ = 0 °, B-cut;
488nm SHG - > 244nm: 4x4x7mm Hom Kuv, θ = 55 °, φ = 0 °, B-cut;
Honour Optics khoom thiab fabricates zoo BBO Crystal, loj, thiab txheej thaum koj thov. Honour Optics yog cov kws tshaj lij kev lag luam loj loj BBO nonlinear Crystal Chaw tsim khoom, yuav tus nqi qis BBO nonlinear Crystal nyob rau hauv Hoobkas nqi.
BBO muaj ib qho tsis tshua raug rau ntawm ya raws. Cov neeg siv yuav tsum tau muab cov khoom noj qhuav rau ob daim ntawv thov thiab kev txuag ntawm BBO.
BBO yog cov mos muag thiab yog li ntawd yuav tsum tau ceev faj kom tiv thaiv tau nws cov phev hnyav.
Thaum lub kaum sab xis hloov yog tsim nyog, thov nco ntsoov tias txoj kev txaus siab ntawm BBO yog me me.