Fresnel Rhombs
• Rotate polarization, operates over a wide wavelength range • λ/2 rhomb is two optically contacted λ/4 rhombs Due to unequal phase shifts arising in orthogonally polarized components of an incident wave at total… Read more →
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| SKU | Cementing material or method | Material | Design Wavelength Range | Retardation | |
|---|---|---|---|---|---|
| 481-1210 | Optically contacted | UVFS | 210 nm - 400 nm | L/2 |
3 in stock
Ships in: 2–5 calendar days
$707
|
Specifications
| Cementing material or method | Optically contacted |
| Mounted | False |
| Material Type | FS |
| Material | UVFS |
| Design Wavelength Range | 210 nm - 400 nm |
| Retardation | L/2 |
Surface 1
| Surface quality, ISO | 20-10 |
| Power and Irregularity, fringes @633 nm | 0(0.2) |
Surface 1, Wavelength 1
| Coating | AR |
| Wavelength | 210 nm - 400 nm |
| Reflectivity, % | 0 % - 1.5 % |
| AOI (angle of incidence) | 0 deg 0 min 0 sec - 0 deg 0 min 0 sec |
Surface 2
| Surface quality, ISO | 20-10 |
| Power and Irregularity, fringes @633 nm | 0(0.2) |
Surface 3
| Surface quality, ISO | 20-10 |
| Power and Irregularity, fringes @633 nm | 0(0.2) |
Description
- Rotate polarization, operates over a wide wavelength range
- λ/2 rhomb is two optically contacted λ/4 rhombs
Due to unequal phase shifts arising in orthogonally polarized components of an incident wave at total internal reflection Fresnel Rhombs are used to alter polarisation type of radiation. They are designed so that two full internal reflections inside a rhomb provide π/2 phase difference between the orthogonally polarized components of radiation. Hence, if there is 45° angle between the polarization of the linearly polarized incident plane, the emerging beam is circularly polarized, i. e. the rhomb effect is similar to that of a quarter-waveplate. Therefore two identical Fresnel rhombs, installed in series, will provide π/2 phase difference similar to that of a half-waveplate, i. e. the device can rotate the beam polarization plane by 90°, leaving the beam direction invariable.
