G73611 Broad Bandpass Filter
Narrow green filter (518 – 540 nm, > 90 % T) with < 1 % UV/blue & red leakage and a modest 35 % IR peek near 780 nm.
- Green passband: 518 – 540 nm, > 90 % T
- UV/blue block: < 1 % T @ 400 – 490 nm
- Red block: < 1 % T @ 575 – 735 nm
- IR tail: ~35 % T @ 780 nm (optional)
- Construction: Ion-assisted hard-oxide; 5 – 450 mm, 0.21 – 3.8 mm thick
- Custom options: AOI tuning, ripple smoothing, rapid prototypes
Learn more
G73611 transmits a narrow slice of saturated green while driving
nearly every other wavelength to background. Transmission clears 90 % at ~518 nm,
stays above that mark to ~540 nm, and dives below one percent by ~575 nm.
UV/blue is suppressed down to detector noise, and yellow-through-red energy
remains near zero until a gentle IR tail rises above 750 nm, peaking around
35 % at ~780 nm—handy for alignment or dual-band sensing without extra optics.
KUPO coats Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates cut
to any outline—from 5 mm chips to 450 mm plates—with thicknesses of
0.21 – 3.8 mm, and can ship prototypes in about two weeks.
Typical uses: FITC-style fluorescence excitation, green-LED machine
vision, RGB laser/LED projection, discrete green channels in multispectral
cameras, saturated stage beams, and AR waveguides that need bright green
injection plus a faint IR reference.
Description
The G73611 provides a narrow 33 nm bandpass at 534 nm with 94.4 % peak transmission, engineered for applications demanding tight spectral selectivity combined with excellent blocking. This filter balances precision wavelength isolation with high transmission efficiency.
Key Advantages
- Exceptional Narrowband Selection – 33 nm bandwidth isolates green wavelengths with > 92 % average efficiency across 516-541 nm
- Dual-Sided Blocking Excellence – Blocks 96.65 % of UV light and 98.08 % of red/NIR wavelengths for superior isolation in complex systems
- Hard-Oxide Ion-Assisted Deposition – Advanced coating resists environmental contamination and mechanical stress while maintaining optical integrity through extended use
- Steep Spectral Roll-Off – Sharp passband edges minimize cross-talk with adjacent detection channels in multiplex optical systems
- Complete Substrate Options – Order as round, square, or custom free-form blanks (5-450 mm) on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG at your selected thickness (0.21-3.8 mm)
Typical Applications
- Two-Photon Microscopy – Filter 532 nm second-harmonic generation from biological samples while rejecting scattered excitation laser light
- Genomic Sequencing – Select green-labeled nucleotide detection signals in high-throughput DNA sequencing platforms with minimal cross-talk
- Raman Spectroscopy – Enable 532 nm Raman measurements in complex matrices where spectral selectivity prevents interference from background fluorescence
- Optical Sorting Systems – Achieve high-speed particle sorting based on precise green fluorescence intensity without false triggering from noise
- Environmental Monitoring – Detect chlorophyll a absorbance signatures in water samples with excellent rejection of UV and red background
Integrate G73611 filters into precision optical systems requiring high spectral selectivity; prototyping and production volume support available.
FAQ
G73611 FAQ
What is G73611 and what is it used for?
G73611 is a 534 nm Bandpass Filter. The G73611 provides a narrow 33 nm bandpass at 534 nm with 94.4 % peak transmission, engineered for applications demanding tight spectral selectivity combined with excellent blocking. This filter balances precision wavelength isolation with high transmission efficiency. Common uses include Two-Photon Microscopy, Genomic Sequencing, Raman Spectroscopy, and Optical Sorting Systems.
What are the key optical specs of G73611?
Key published specs for G73611 include Centre wavelength (CWL): 529.5 nm; Bandwidth (FWHM): 33 nm; Peak transmittance: ≥ 94.4 % T; Passband range: 513 – 546 nm; Edge steepness: ~15 nm (10 → 90 % per edge).
What applications is G73611 best suited for?
G73611 is commonly used for Two-Photon Microscopy, Genomic Sequencing, Raman Spectroscopy, and Optical Sorting Systems. Two-Photon Microscopy - Filter 532 nm second-harmonic generation from biological samples while rejecting scattered excitation laser light.
Can G73611 be customized for size, substrate, or coating requirements?
KUPO lists the construction for G73611 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include CWL shifting, bandwidth tuning, custom blocking ranges, rapid prototypes. Complete Substrate Options - Order as round, square, or custom free-form blanks (5-450 mm) on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG at your selected thickness (0.21-3.8 mm).
What should I know about angle of incidence and durability for G73611?
The published angle of incidence for G73611 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
