CLBO

CLBO is a deep ultraviolet nonlinear optical crystal. It has potential value in the field of deep ultraviolet laser technology, especially in high-power and high-efficiency deep ultraviolet lasers, such as high-precision optical measurement, material processing, and scientific research.

PRODUCT FEATURE

Cut-off wavelength up to 180 nm

Maximum FOHG and FIHG conversion efficiencies of Nd doped laser

Relatively large effective NLO coefficient (about two times that of KDP)

Wide acceptance angle and small walk-off angle

No saturation for high-power generation

Short grow cycle and large size

SPECIFICATIONS
Dimension Tolerance	(W±0.1mm)×(H±0.1mm)×(L+0.5/-0.1mm) (L≥2.5 mm) (W±0.1mm)×(H±0.1mm)×(L+0.1/-0.1mm) (L＜2.5 mm)
Clear Aperture	Central 90% of the diameter
Surface Quality (Scratch/Dig)	10/5 to MIL-PRF-13830B
Flatness	≦ λ/6 @633 nm
Parallelism	20 arc sec
Perpendicularity	≦ 15 arc min
Angle Tolerance	Δθ≦0.25 °, ΔФ≦0.25 °
Chamfer	≦ 0.2 mm × 45 °
Chip	≦ 0.1 mm
Damage Threshold	＞300 MW/cm2@532 nm, 10 ns, 10 Hz (AR-Coated); ＞150 MW/cm2 @266 nm, 10 ns, 10 Hz (AR-Coated);
Quality Warranty Period	One year under proper use.

CHEMICAL AND STRUCTURAL PROPERTIES
Crystal Structure	Tetragonal, Space group Ⅰ
Lattice Parameter	a=b=10.494 Å，c=8.939 Å
Symmetry	Z=4
Melting Point	About 約844.5 ℃

OPTICAL AND NONLINEAR OPTICAL PROPERTIES
Transparency Range	180～2750 nm
Angle Acceptance	1.02 mrad·cm at 1064 nm, 0.49 mrad·cm at 532 nm，0.84 mrad·cm at 488 nm.
Temperature Acceptance	9.4℃·cm
Spectral Acceptance	7.03 nm·cm at 1064 nm, 0.13 nm·cm at 532 nm, 0.09 nm·cm at 488 nm
Walk-off Angle	1.78 °at 1064 nm, 1.83 °at 532 nm, 0.98 °at 488 nm
Effective NLO Coefficients	1.01 pm/V at 532 nm, 1.16 pm/V at 488 nm, 0.95 pm/V at 1064 nm
NLO Coefficients	d_eff (Ⅰ) = d₃₆ sinθ_m sin(2Ф) d_eff (Ⅱ) = d₃₆ sin(2θ_m) sin(2Ф)
Sellmeier Equations (λ in μm)	CLBO at 20 ℃ n_o² = 2.2104 + 0.01018 / (λ² - 0.01424) - 0.01258 λ² n_e² = 2.0588 + 0.00838 / (λ² - 0.01363) - 0.00607 λ² (0.1914 µm<λ<2.09 µm)