BaF2 Optical Crystals for Cross Polarized Wave Generation
Cross-Polarized Wave (XPW) generation is a nonlinear third order process during which fundamental and generated waves have the same frequency; however, generated wave is perpendicularly polarized to pump wave… Read more →
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Product
| SKU | Thickness | Material Type | Material | Coating S1W1 | Coating S2W1 | |
|---|---|---|---|---|---|---|
| 540-7105 | 0.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$216
|
| 540-7105M | 0.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
| 540-7110 | 1 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$216
|
| 540-7110M | 1 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
| 540-7115 | 1.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
6 in stock
Ships in: 2–5 calendar days
$216
|
| 540-7115M | 1.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
| 540-7120 | 2 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
9 in stock
Ships in: 2–5 calendar days
$216
|
| 540-7120M | 2 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
| 540-7125 | 2.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
9 in stock
Ships in: 2–5 calendar days
$216
|
| 540-7125M | 2.5 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
| 540-7130 | 3 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
4 in stock
Ships in: 2–5 calendar days
$216
|
| 540-7130M | 3 mm | Crystalline Material | BAF2 | Uncoated | Uncoated |
Out of stock
Ships in: 62–65 calendar days
$276
|
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Specifications
| Shape Type | Square |
| Material Type | Crystalline Material |
| Material | BAF2 |
Surface 1
| Surface quality, ISO | 60-40 |
| Power and Irregularity, fringes @633 nm | -(1) |
| Irregularity, fringes @633 nm | 1 fr |
Surface 1, Wavelength 1
| Coating | Uncoated |
Surface 2
| Surface quality, ISO | 60-40 |
| Power and Irregularity, fringes @633 nm | -(1) |
| Irregularity, fringes @633 nm | 1 fr |
Surface 2, Wavelength 1
| Coating | Uncoated |
Description
Cross-Polarized Wave (XPW) generation is a nonlinear third order process during which fundamental and generated waves have the same frequency; however, generated wave is perpendicularly polarized to pump wave polarization. Phase matching occurs over large bandwidth in XPW generation process. This means the same phase and group velocities for fundamental wave and XPW.
Cross-polarized wave (XPW) generation process is driven by the third order nonlinearity of the crystal, and the anisotropy of the sensor.
The typical optical material used for cross-polarized wave (XPW) generation is Barium Fluoride (BaF₂) crystal with z ([001]) or holographic ([011]) crystallographic orientation. Theory predicts a maximum XPW energy conversion efficiency around 35% when using [011]-cut BaF₂ crystal with a concomitant pulse shortening factor of √3 corresponding to a pure third-order nonlinear process[¹].
Eksma Optics offers [011] orientation BaF₂ optical crystals (XPW crystals) for Cross-Polarized Wave (XPW) generation. BaF₂ optical crystals with orientation [001] as well CaF₂ optical crystals are available on request.
Characteristics of the different Cross Polarized Wave (XPW) crystals at 2.1 µm [2]
- Orientation: BaF₂: h-cut [011]; CaF₂: h-cut [011]; CVD-Diamond: z-cut [001]
- Length, mm: BaF₂: 2; CaF₂: 2; CVD-Diamond: 1.2
- n: BaF₂: 1.464; CaF₂: 1.426; CVD-Diamond: 2.383
- (10⁻²² m² / V²): BaF₂: 1.53; CaF₂: 0.94; CVD-Diamond: 11
- σ: BaF₂: -1.2; CaF₂: -0.6; CVD-Diamond: -1.8
- GVD (fs² / mm): BaF₂: -6; CaF₂: -27; CVD-Diamond: 63
[1] L. Canova, S. Kourtev, N. Minkovski, A. Jullien, R. Lopez-Martens, O. albert, and S.M. Saltiel, Appl. Phys. Lett. 92, 231102 (2008)
[2] Ricci, A., Silva, F., Julline, A., Cousin, S. L., Austin, D. R., Biegert, J., Lopez-Martens, R. Generation of High-Fidelity few-cycle pulses at 2.1 µm via cross-polarized wave generation. Optics Express 9711, 2013.04.22. Vol. 21, No. 8. DOI:10.1364/OE.21.009711
