Start Optics Crystals Non-Linear Optical Crystals
NLO Crystals Print E-mail

 

Non-linear optical crystals for frequency doubling, phase modulation, etc.

 

 

NLO CrystalBBOKTPLBOLiNbO3
 

Physical and Optical Properties
Crystal Structuretrigonal, space group R3cOrthorhombic, point group mm 2Orthorhombic, point group mm 2Trigonal, space group R 3c
Transparency Range189 - 3500 nm350nm~4500nm160 - 2600 nm420 - 5200 nm
Cell Parametersa=b=12.532Å, c=12.717Åa=6.404Å, b=10.616Å, c=12.814Åa=8.44731Å, b=7.3788Å, c=5.1395Å a = 0.515Å, c = 13.863Å
Melting Point1095 +/-5°C1172°C incongruent834°C1255 +/-5°C
Curie point925 +/-5°C936°C 1140 +/-5°C
Optical HomogeneityΔn ≈ 10-6 /cmΔn ≈ 10-6 /cmΔn ≈ 10-6 /cmΔn ≈ 5 x 10 -5 /cm
Mohs Hardness4.5565
Density3.85 g/cm33.01 g/cm32.47g/cm34.64 g/cm3
Thermal Conductivity|_ c, 1.2 W/m/K; ||c, 1.6 W/m/K0.13 W/cm/°K 38 W /m /K @ 25°C
Phase-matchable SHG range205nm-1750nm1000-2000nm800-2000nm 
Absorption Coefficient< 0.1%/cm (at 1064 nm)a < 1%/cm @1.064 µm and 0.532 µm <=1%/cm at 1064nm<0.1%/cm @ 1064 nm
NLO coefficientsd11 = 5.8 x d36(KDP)
d11 = 0.05 x d 11 ,
d22 < 0.05 x d11 		d31 =2.54pm/V,
d31 =4.35pm/V,
d31 =16.9pm/V
d24 =3.64pm/V,
d15 =1.91pm/V at 1.064 mm 		 d33 = 34.4pm/V
d31 = d15 = 5.95pm/V
d22 = 3.07pm/V
Damage Threshold at 1.064 mm 12.9J/cm2 9.9GW/cm26.0J/cm2; 4.6GW/cm224.6J/cm2; 18.9GW/cm2200 MW/cm2
Refractive Indices
at 1.0642 mm
at 0.5321 mm
ne = 1.5425, no = 1.6551
ne = 1.5555, no = 1.6749
Nx = 1.73991
Ny = 1.74802
Nz = 1.82956
Nx = 1.77903
Ny = 1.79002
Nz = 1.88628		Nx = 1.56447
Ny = 1.59050
Nz = 1.60538
Nx = 1.57842
Ny = 1.60650
Nz = 1.62154		No = 2.23216
Ne = 2.15600
No = 2.32309
Ne = 2.23415
Typical Specification and Capabilities
Angle toleranceΔθ< ± 0.5°; Δφ< ±0.5°Δθ< ± 0.5°; Δφ< ±0.5°Δθ< ± 0.5°; Δφ< ±0.5°Δθ< ± 0.5°; Δφ< ±0.5°
Dimension tolerance(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)(W ± 0.2mm) x (H ± 0.2mm) x (L + 0.2mm/-0.2mm)(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)
Flatness< λ /8 @ 633nmλ/8 @ 633nmλ /4 @ 632.8nm< λ/8 @ 633nm
Scratch/Dig code better than 10/5 Scracth/dig per MIL-O-13830A better than 10/5 Scracth/dig per MIL-O-13830A Better than 20/10 Scracth/digbetter than 10/5 Scracth/dig per MIL-O-13830A
Parallelism < 20 arc seconds< 20 arc seconds< 20 arc seconds< 20 arc seconds
Perpendicularity< 5 arc minutes< 5 arc minutes< 30 arc minutes< 5 arc minutes
Wavefront distortion< λ/8 @ 633nm< λ/8 @ 633nm< λ/4 @ 632nm< λ/8 @ 633nm
Clear aperture> 90% central area> 90% central areaCentral 80%> 90% central area
Aperture1x1 ~ 12x12mm1x1 ~ 10x10mm2 ~ 10mm1~50 mm
Phase matching typeType I or Type IIType IIType I or Type IIType I or Type II
End configurationFlat or Brewster or SpecifiedFlat or Brewster or SpecifiedFlat, spherical, parallel and wedgedFlat, spherical, parallel and wedged
Typical CoatingAntireflective coatingAntireflective coating Highreflective CoatingAntireflective CoatingAntireflective Coating