BBO Nonlinear Crystals

Beta Barium Borate Crystals

Trigonal BBO Crystal

Product Description

BBO Crystal is a one of the most important nonlinear optical crystals, beta-barium borate (β-BaB2O4,β-BBO) combines many outstanding features such as its high nonlinear optical coefficients, low group-velocity dispersion, broad transparency range (189–3500 nm) and high damage threshold. This unique combination ensures β-BBO crystal a promising candidate for a wide range of nonlinear optical applications such as frequency converters and optical parametric oscillators. In the realm of quantum optics, β-BBO crystal can be used to generate entangled photon pairs and ten-photon entanglement.

Physical and Chemical Properties

Property	Value
Chemical formula	BaB2O4
Crystal structure	trigonal, 3m
Lattice Parameter	a=b=12.532Å,c=12.717Å, Z=6
Mass density	3.85 g/cm3
Moh hardness	4
Melting point	About 1095°C
Thermal conductivity	1.2 W/m/K (⊥c); 1.6 W/m/K (//c)
Thermal expansion coefficient	α,4×10-6/K; c,36×10-6/K
Birefringence	negative uniaxial

Linear Optical Properties

Property	Value
Transparency Range	189 – 3500 nm
Absorption Coefficient	α<0.1%/cm @1064nm
at 1.0642 μm at 0.5321 μm at 0.2660 μm	ne = 1.5425, no = 1.6551 ne = 1.5555, no = 1.6749 ne = 1.6146, no = 1.7571
Sellmeier Equations(λ in μm)	no2(λ) = 2.7359+0.01878/(λ2-0.01822)-0.01354λ2 ne2(λ) = 2.3753+0.01224/(λ2-0.01667)-0.01516λ2

Nonlinear Optical Properties

Property	Value
SHG Phase Matchable Range	409.6 ∼ 3500nm (Type I); 525 ∼ 3500nm (TypeII)
NLO coefficients	d11= 5.8 x d36(KDP); d31 = 0.05 x d11; d22< 0.05 x d11
	deff(I)=d31sinθ+ (d11cos3φ – d22sin3φ)cosθ
	deff(II)=(d11sin3φ+ d22cos3θ)cos2θ
Therm-Optic Coefficients	dno/dT = – 9.3 x 10-6/◦C
Therm-Optic Coefficients	dne/dT = -16.6 x 10-6/◦C
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 μm	5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns)
at 0.532 μm	1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps)

Experimental Values of Phase-matching Angle (T =293K)

Interacting wavelengths[μm]	θexp [deg]
SHG, o+o ⇒ e
0.4096⇒0.2048	90
0.41⇒0.20	90
0.41152⇒0.20576	82.8
0.41546⇒0.20773	79.2
0.418⇒0.209	77.3
0.429⇒0.2145	71
0.4765⇒0.23825	57
0.488⇒0.244	54.5
0.4965⇒0.24825	52.5
0.5106⇒0.2553	50/50.6
0.5145⇒0.25725	49.5
0.5321⇒0.26605	47.3/47.5/47.6/48
0.589⇒0.2945	41.5
0.604⇒0.302	40
0.6156⇒0.3078	39
0.616⇒0.308	38
0.70946⇒0.35473	32.9/33/33.1/33.3/33.7
0.78⇒0.39	31/30
0.8⇒0.4	26.5
0.946⇒0.473	24.9
1.0642⇒0.5321	22.7/22.8
SFG, o+o ⇒ e
0.73865+0.25725⇒0.1908	81.7
0.72747+0.26325⇒0.1933	76
0.5922+0.2961⇒0.1974	88
0.5964+0.2982⇒0.1988	82.5
0.5991+0.29955⇒0.1997	80
0.60465+0.30233⇒0.20155	76.2
0.5321+0.32561⇒0.202	83.9
0.6099+0.30495⇒0.2033	73.5
0.5321+0.34691⇒0.21	71.9
0.7736+0.25787⇒0.1934	70.7
0.5321+0.35473⇒0.21284	70
0.51567+0.38675⇒0.221	64.7
0.804+0.268⇒0.201	64
0.75+0.375⇒0.25	61.7
1.0642+0.26605⇒0.21284	51.1
0.78+0.373⇒0.2523	47.4
1.0642+0.298⇒0.23281	46.1
0.5782+0.5106⇒0.27115	46
0.59099+0.5321⇒0.28	44.7
0.78+0.43⇒0.2772	43.4
1.0642+0.35473⇒0.26605	40.2
1.0641+0.53205⇒0.3547	31.3
1.0642+0.5321⇒0.35473	31.1/31.3/31.4
2.68823+0.5712⇒0.4711	21.8
1.41831+1.0642⇒0.608	21
SHG, e+o ⇒ e
0.5321⇒0.26605	81
0.70946⇒0.35473	48/48.1
1.0642⇒0.5321	31.6/32.4/32.7/32.9
SFG, e+o ⇒ e
1.0642+0.35473⇒0.26605	46.6
1.0642+0.5321⇒0.35473	38.4/38.5
SFG, o+e ⇒ e
1.0642+0.5321⇒0.35473	59.8

Feature

The range of transmission is from 190 nm to 3500nm
Good physical properties
Appropriate mechanical properties
Effective SHG(Second-harmonic generation) coefficient is large
Damage threshold of 100 ps pulse with 10 J/cm2 at 1064 nm
The range of phase matching is large from 409.6 nm to 3500nm
Temperature bandwidth is about 55℃
Optical homogeneity is high:δn≈10-6/cm

Tag:

Place of Origin:	China
Brand Name:	CRYLINK
Certification:	Iso9001
Model Number:	CRYLINK-BBO Nonlinear Crystal

Minimum Order Quantity:	1 Pieces
Price:	negotiation
Packaging Details:	Carton
Delivery Time:	3-4 weeks
Payment Terms:	TT
Supply Ability:	100 pieces /month

BBO Nonlinear Crystals / Beta Barium Borate β-BaB2O4 Trigonal 1095°C Melting