M79303 Broadband Notch Filter
Precise green-yellow band rejection with excellent edge definition and passband recovery.
- Notch centre: 527.1 nm
- Notch width (FWHM): 167.0 nm
- Notch depth: OD ≥ 3.0 (T < 0.104%)
- Passband transmittance: ≥ 80.3% T (outside notch region)
- Edge steepness: ~29 nm (90 → 10 % per edge)
- Passband recovery: Within 18 nm of notch edges
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Centre tuning, notch width adjustment, multi-notch designs, rapid prototypes
Learn more
M79303 Hybrid delivers Notch centre 527.1 nm, Notch width (FWHM) 167.0 nm, and Notch depth OD ≥ 3.0 (T < 0.104%).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Analytical spectroscopy, LED/light source characterization, environmental sensing, and optical systems with moderate to demanding green-yellow isolation needs.
Description
The M79303 combines precise spectral isolation with exceptional transmission efficiency across dual passbands. Blocking 456-584 nm with only 0.1 % depth at 507 nm, this filter transmits 89.3 % in the blue region and 92.2 % in the red-NIR band, reaching 95.2 % peak transmission. Its 167 nm notch width balances rejection depth with passband bandwidth, making it suitable for demanding fluorescence and laser-based applications.
Key Advantages
- Controlled Notch Width - 167 nm blocking band optimizes the ratio between deep rejection and usable passband separation
- Ultra-Low Notch Depth - 0.1 % transmission at 507 nm effectively suppresses green fluorescence and laser scatter
- Hard-Oxide Multilayer Coatings - Ion-assisted deposition ensures long-term durability in laboratory and industrial environments
- Flexible Form Factors - Available in round, square, free-form shapes on standard glass substrates from 5-450 mm diameter and 0.21-3.8 mm thickness
- Consistent Peak Transmission - 95.2 % across both passbands minimizes signal loss in multi-detector optical systems
Typical Applications
- Fluorescence Microscopy - Optimized for separating cyan and red fluorophore channels in live-cell imaging
- Two-Photon Excitation - Blocks green Raman and SHG artifacts while passing red emission in intravital imaging
- Laser-Induced Fluorescence - Achieves clean spectral separation in portable and field-deployed LIF instruments
- Multispectral Sensing - Enables efficient dual-channel radiometry and color discrimination in remote sensing systems
- Stage Lighting Control - Creates magenta color effects while blocking green wavelengths in theatrical and broadcast applications
Prototyping completed in 2-3 weeks; volume production delivers consistent coatings and precise substrate dimensions.
FAQ
M79303 FAQ
What is M79303 and what is it used for?
M79303 is a 444/611 nm Notch Filter. The M79303 combines precise spectral isolation with exceptional transmission efficiency across dual passbands. Blocking 456-584 nm with only 0.1 % depth at 507 nm, this filter transmits 89.3 % in the blue region and 92.2 % in the red-NIR band, reaching 95.2 % peak transmission. Common uses include Fluorescence Microscopy, Two-Photon Excitation, Laser-Induced Fluorescence, and Multispectral Sensing.
What are the key optical specs of M79303?
Key published specs for M79303 include Notch centre: 527.1 nm; Notch width (FWHM): 167.0 nm; Notch depth: OD ≥ 3.0 (T < 0.104%); Passband transmittance: ≥ 80.3% T (outside notch region); Edge steepness: ~29 nm (90 → 10 % per edge).
What applications is M79303 best suited for?
M79303 is commonly used for Fluorescence Microscopy, Two-Photon Excitation, Laser-Induced Fluorescence, and Multispectral Sensing. Fluorescence Microscopy - Optimized for separating cyan and red fluorophore channels in live-cell imaging.
Can M79303 be customized for size, substrate, or coating requirements?
KUPO lists the construction for M79303 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Centre tuning, notch width adjustment, multi-notch designs, rapid prototypes. Flexible Form Factors - Available in round, square, free-form shapes on standard glass substrates from 5-450 mm diameter and 0.21-3.8 mm thickness.
What should I know about angle of incidence and durability for M79303?
The published angle of incidence for M79303 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
