85-903 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1550nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 1575 nm
- Cut On Frequency
- 1525 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4440236216729967
- λ
- 1550 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
85-903 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1550nm
The 85-903 is a Bandpass Filter, specifically designed for use in optical systems requiring a narrow bandwidth of 50nm centered around 1550nm. This filter, offered by Edmund Optics, is circular in shape with a diameter of 25mm and a thickness of 3.5mm, making it compatible with a wide range of optical setups.
The filter is hard coated with EDM 85-891 on both the front and back surfaces, enhancing its durability and resistance to wear and tear. This coating also aids in reducing surface reflections, thereby improving the overall transmission efficiency of the filter.
The 85-903 features a cut-on wavelength of 1525nm and a cut-off wavelength of 1575nm, ensuring a tight passband around the desired 1550nm center wavelength. This makes it ideal for applications that require high spectral purity and rejection of out-of-band light.
The filter is designed with a thin lens shape, allowing it to be easily integrated into various optical systems. It is currently in stock and available for immediate purchase through the Edmund Optics website.
