Laser Line Filter
Laser Line Filters are precision optical filters designed to transmit a specific laser wavelength while blocking unwanted surrounding wavelengths. Using advanced dielectric bandpass coatings, laser line filters provide high transmission at the target laser wavelength and high optical density blocking outside the passband. Chenyu Optics manufactures laser line filters in BK7 and fused silica with custom center wavelength and bandwidth.
Laser Line Filter Overview
Laser Line Filters are precision optical filters designed to transmit a specific laser wavelength while blocking unwanted surrounding wavelengths.
Using advanced dielectric bandpass coatings, laser line filters provide high transmission at the target laser wavelength and high optical density blocking outside the passband. They are widely used in laser measurement, fluorescence imaging, Raman spectroscopy, machine vision and optical sensing systems.
Chenyu Optics supports custom laser line filter manufacturing according to customer drawings, including custom substrate material, dimensions, center wavelength and bandwidth for prototype and repeat production.
Key Advantages of Laser Line Filter
Laser Measurement & Raman Spectroscopy Systems
Laser line filters are widely used for precise laser wavelength isolation in laser measurement systems, Raman spectroscopy equipment, fluorescence imaging and machine vision systems.
Typical Specifications of Laser Line Filter
| Material Options | BK7, Fused Silica |
|---|---|
| Coating Type | Laser line bandpass coating |
| Optical Function | Laser wavelength selection |
| Center Wavelength | Customizable |
| Bandwidth (FWHM) | Customizable |
| Transmission | High transmission at target wavelength |
| Blocking | High optical density outside passband |
| Surface Quality | High precision optical finish |
Spectral Transmission Curve (Typical)
Why Choose Chenyu Optics for Laser Line Filter
Chenyu Optics focuses on drawing-based precision filter manufacturing for laser measurement, spectroscopy, machine vision and industrial optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard laser line filters.
Manufacturing Capability for Laser Line Filter
Precision Polishing
High surface quality processing for stable filter performance.
Dielectric Coating
High performance laser line bandpass coating for precise center wavelength control.
Inspection & Packaging
Strict quality control on center wavelength, bandwidth and blocking, with clean protective packaging before shipment.
Custom Laser Line Filter Options
Bandpass Filter Type Comparison
| Filter Type | Typical FWHM | Peak Transmission | Blocking (OD) | Typical Applications |
|---|---|---|---|---|
| Laser Line Filter | < 1 – 5 nm | >90% | OD4 – OD6+ | Laser measurement, Raman spectroscopy |
| Narrow Bandpass Filter | 1 – 10 nm | >90% | OD4 – OD6+ | Laser line selection, fluorescence |
| Standard Bandpass Filter | 10 – 50 nm | >90% | OD4 – OD6+ | Machine vision, instrumentation |
| Wide Bandpass Filter | 50 – 200 nm | >90% | OD4 – OD6 | Imaging, spectroscopy |
Applications of Laser Line Filter
Laser Measurement Systems
Precise laser wavelength isolation for measurement instruments.
Fluorescence Imaging Systems
Wavelength isolation for fluorescence excitation and emission.
Raman Spectroscopy Equipment
Laser line filtering for Raman spectroscopy setups.
Machine Vision Systems
Wavelength filtering for machine vision and inspection equipment.
Optical Sensing Systems
Precision spectral filtering for optical sensor design.
Laser Alignment Systems
Precise wavelength isolation for laser alignment and calibration setups.
Laser Line Filter FAQ
What is a laser line filter used for?
A laser line filter isolates a specific laser wavelength while blocking unwanted background wavelengths.
What parameters define a laser line filter?
Key parameters include center wavelength, bandwidth (FWHM), peak transmission, optical density blocking, and incident angle.
Can laser line filters be customized for different lasers?
Yes. Filters can be customized for UV, visible, and near-infrared laser wavelengths.
Does incident angle affect laser line filter performance?
Yes. The center wavelength can shift with incident angle, so coating design should match the optical setup.
What information should I provide for a quotation?
Please provide center wavelength, bandwidth, substrate material, dimensions, angle of incidence, quantity and drawing if available.
Where can I learn more about laser line filter design?
Additional information on laser line filter design can be found from Edmund Optics.
Related Products for Laser Line Filter
Need Custom Laser Line Filters?
Send us your laser wavelength, bandwidth, substrate, dimensions, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable laser line filter manufacturing suggestion.