27009 R 26 mm x 38 mm SII 3nm Bandpass Filter by Chroma

The 27009 R 26 mm x 38 mm SII 3nm Bandpass Filter is a high-quality optical component designed for precise wavelength selection, manufactured by Chroma, a leading vendor in the field of optical elements. This filter is specifically designed for use with the Sodium-II (SII) spectral line, with a central wavelength (CWL) of 670 nm, making it ideal for applications such as astronomy, spectroscopy, and laser technology.

The filter is of the Bandpass type, which means it allows light to pass through a specific range of wavelengths while blocking out light from other wavelengths. The 27009 R filter has a cut-on wavelength of 668.5 nm and a cut-off wavelength of 671.5 nm, providing a narrow 3nm bandwidth for optimal wavelength discrimination.

This filter is rectangular in shape, with a width of 26 mm and a height of 38 mm, making it suitable for use in a variety of optical systems. It has a thickness of 1 mm, providing robustness and durability while maintaining minimal optical path difference. The filter is coated on both sides with the Chroma 27009 coating, ensuring high transmission and low reflection across the passband.

The 27009 R filter is designed with a Thin Lens shape, which allows for easy integration into optical systems and minimizes optical aberrations. The filter is currently in stock and available for immediate purchase, as indicated by its valid weblink status. For more information and detailed specifications, please refer to the Chroma website using the provided weblink.