720-950 nm Broadband Coverage
5 mm or 8 mm Apertures
High Verdet constant
Low absorption coefficients
Our broadband Faraday optical isolators offer a wide 720-950 nm range making them useful in multiple applications.
| Model | Description | Availability | Price | Qty. | |
|---|---|---|---|---|---|
| ISO-05-800-BB | Broadband Faraday Optical Isolator, 5 mm Aperture, 720-950 nm | Call | ¥24,527.89 | ADD |
| ISO-08-800-BB | Broadband Faraday Optical Isolator, 8 mm Aperture, 720-950 nm | Call | ¥28,469.86 | ADD |
| Model | ISO-05-800-BB | ISO-08-800-BB |
|---|---|---|
| Polarization Direction of Input Beam | ||
| Clear Aperture (mm) | 5 | 8 |
| Center Wavelength (nm) | 800 | 800 |
| Spectral Range (nm) | 720–950 | 720–950 |
| Isolation @ 22°C | 30 | 30 |
| Transmission (%) @ 22°C | > 90 | > 90 |
| Operating Temperature | 10-50 °C | 10-50 °C |
| Storage Temperature | 10-60 °C | 10-60 °C |
| Pulse Damage Threshold (J/cm2) For a 10 ns pulse | 1 | 1 |
| Polarizer Type | PBS Cube Polarizer | |
| Rotating Medium | Terbium Gallium Garnet | |
The Broadband isolators use high damage threshold BK-7 polarizing beamsplitter (PBS) cubes and provide double escape ports for added application flexibility.
The TGG utilized in our Faraday Isolators, creates a large Verdet constant that ultimately describes the strength of the Faraday effect.
Our Faraday Isolators have low absorption as a function of the TGG and Polarizers.
High power faraday optical isolators are offered with 5 mm apertures or 8 mm apertures for larger beam sizes.
Strong Neodymium Iron Boron permanent magnets are used to generate >10,000 Gauss axially-oriented fields within the magnet housing. The strong longitudinal field causes 45 degrees of non-reciprocal polarization rotation for propagating light via the Faraday Effect in the Terbium Gallium Garnet (TGG) crystal located within the magnet housing. Following the TGG crystal is a quartz reciprocal rotator with 45 degrees rotation. In the forward direction, the two rotations add up, resulting in 90 degrees of rotation. In the reverse direction, the two rotations are opposite and result in 0 degrees of rotation. The change in rotation as the wavelength shifts from the central wavelength is similar for both TGG and quartz, resulting in broadband operation. In operation, the magnet housing is sandwiched between input and output polarizers that have their transmission axis oriented 90 degrees relative to each other. In the reverse direction the backward traveling beam has a polarization orthogonal to the input polarizer and is therefore crossed with it, resulting in a rejected beam exiting the input polarizer.