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News:
Nd:YAG Produces 2.8W of Blue Light by Photonics
BIBO (BiB3O6) is a newly developed Nonlinear Optical Crystal. It possesses large
effective nonlinear coefficient, high damage threshold and is non-hydroscopic.
It's nonlinear coefficient is 3.5 - 4 times higher than that of LBO, 1.5 -2
times higher than that of BBO. It can efficiently frequency doubling the 946nm
to produce blue laser at 473nm.
Advantages:
-
Broad transparency range from 286nm to
2500nm
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High optical homogeneity (dn»10-6/cm) and being free of
inclusion
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Large effective SHG coefficient (about 9 times that of
KDP)
-
High damage threshold
-
Wide temperature-bandwidth
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Inertness with respect to moisture
Application:
-
SHG and THG for middle and high power Nd: lasers at 1064nm
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SHG and THG of high power Nd: lasers at 1342nm & 1319nm for red and blue laser
-
SHG for the Nd: Lasers at 914nm & 946nm for blue
laser
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Optical Parametric Amplifiers (OPA) and Oscillators (OPO)
application
|
Nonlinear Optical
Property Comparison
|
| Properties |
BIBO |
LBO |
BBO |
| Length
(mm) |
10.4 |
10 |
8 |
| Deff (pm/V) |
3.3 |
0.81 |
2.0 |
| Walk-Off
(mrad) |
40.7 |
11.3 |
60.3 |
| Output
Power (W)
|
2.8 |
1.52 |
2.1 |
| Conversion
Efficiency |
63% |
33% |
47% |
|
|
Main Specification
|
|
| Maximum Size |
20 x 20 x 40
mm |
| Diameter
Tolerance |
±0.1mm |
| Length |
+0.5/-0.1mm
(L>=2.5mm)
+0.1/-0.1mm (L<2.5mm) |
Coating specification:
|
a) AR @ 940nm or HR @940nm
b) AR @ 1053nm or AR @1030nm or HR @1053nm |
| Parallelism |
< 20 arc seconds |
| Perpendicularity |
< 5 arc minutes |
|
Angle
Tolerance |
Dq
< ±
0.3°,
Df
< ±0.3°
|
| Surface
Flatness |
<λ/8 at 632.8nm |
| Surface
Quality |
10/5
scratch-dig |
| Clear
aperture |
Central
90% |
|
|
Physical and
Chemical Properties
|
| Crystal Structure |
Moniclinic, point group 2 |
| lattice Parameters |
a = 7.116 Ä, b = 4.993Ä, c = 6.508Ä, Z =
105.62° |
| Melting Point (congruent) |
726°C |
| Specific Heat |
0.5 J/g-K at 330 K |
| Hardness |
5 – 5.5 Mohs |
| Density |
5.033 g/cm3 |
| Thermal Expansion
Coefficients |
//a, 4.8 x 10-5/K , //b, 4.4 x 10-6/K,
//c, -2.69 x 10-5/K |
| Optical
Properties |
|
| Transparency
Range |
286-2500 nm |
Refractive
Indices
at 1079.5 nm
at 539.75 nm |
n1 = 1.9166, n2 = 1.7569, n3 = 1.7835
n1 = 1.9260, n2 = 1.7874, n3 = 1.8190 |
| Optical
homogeneity |
~ 10-6/cm
|
| NLO coefficients
(pm/V) |
d11 = 2.53, d12
= d14 = 2.3, d13 = -1.3,
d25 = d36 = 2.4, d26 = 2.8,
d35 = -0.9 |
| Sellmeier
Equations |
ni2(l) = A
+ B/(l2-C) )-
Dl2
|
A |
B |
C |
D |
|
n1
|
3.6545
|
0.0511
|
0.0371
|
0.0226
|
|
n2
|
3.0740
|
0.0323
|
0.0316
|
0.01337
|
|
n3
|
3.1685
|
0.0373
|
0.0346
|
0.01750
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