200nm VUV Deep UV Filter FWHM 20nm Overview

The 200nm Deep UV Filter (FWHM 20nm) is a narrow-bandpass filter specifically designed for the deep ultraviolet spectrum, featuring a center wavelength of 200nm and a full width at half maximum (FWHM) of 20nm. Utilizing hard dielectric thin-film interference coating technology on a UV-grade fused silica substrate, it delivers >15% transmission within the 190–210nm range while achieving an average blocking level of OD3 across the 170–1200nm range, thereby significantly enhancing the signal-to-noise ratio. This filter is suitable for long-term operation with high-energy light sources, such as deuterium lamps and UV LEDs.

The spectrum Curve Of 200nm VUV Deep UV Filter FWHM 20nm

200nm VUV Deep UV Filter FWHM 20nm Technical Specifcation

• Centerwavelength: 200+/-3nm
• FWHM: 20+/-3nm
• Transmission Peak >15%
• Blocking depth: 170-1200nm@OD3 average
• Standard Size in stock: Dia25.4*6mm or custom

Other Deep UV filter and UV Bandpass Filter In Stock List:

200nm VUV Deep UV Filter FWHM 20nm Applications

High-Performance Liquid Chromatography (HPLC) and UV-Vis Spectrophotometry

In the pharmaceutical and life sciences sectors, peptides, proteins, and the active ingredients of many drugs exhibit strong absorption peaks in the 200–210 nm range. While broadband deep-UV light sources—such as deuterium lamps—cover this spectral region, they also generate significant stray light. Incorporating a 200/20 nm narrowband filter as a core component of the analytical instrument allows for the precise isolation of this 200–210 nm range, thereby drastically reducing background noise.

NDUV/DOAS Systems

Key industrial emission gases—such as nitric oxide (NO), sulfur dioxide (SO₂), and ammonia (NH₃)—exhibit distinct characteristic UV absorption spectra near 200 nm (specifically within the 190–210 nm range). A 200/10 nm UV bandpass filter can be integrated into UV gas analyzers or absorption spectrometers to filter out irrelevant wavelengths.

Ultrapure Water TOC Analysis and UV Monitoring

In the microelectronics manufacturing and pharmaceutical industries, short-wavelength deep-UV light (185–200 nm) can break the chemical bonds of organic compounds and oxidize ultrapure water; a 200/20 nm deep-UV bandpass filter serves as an optical window for monitoring these organic substances.