Littrow Prism
Littrow Prisms are precision optical prisms designed for Littrow configuration applications, where the incident and reflected beams travel along nearly the same optical path. They are commonly used for wavelength selection, spectral analysis and laser system applications. Chenyu Optics manufactures Littrow prisms in BK7, fused silica and UV fused silica with custom dimensions and coatings.
Littrow Prism Overview
Littrow Prisms are precision optical prisms designed for Littrow configuration applications, where the incident and reflected beams travel along nearly the same optical path. They are commonly used for wavelength selection, spectral analysis and laser system applications.
With precise apex angle control and high optical surface quality, Littrow prisms provide accurate wavelength separation and stable optical performance for compact spectral systems.
Chenyu Optics supports custom Littrow prism manufacturing according to customer drawings, including custom apex angle, dimensions and coating design for prototype and repeat production.
Key Advantages of Littrow Prism
Spectroscopy & Laser Wavelength Selection
Littrow prisms are widely used for wavelength separation in spectroscopy systems, tunable laser systems and spectral analysis equipment.
Typical Specifications of Littrow Prism
| Material Options | BK7, Fused Silica, UV Fused Silica |
|---|---|
| Optical Function | Wavelength separation, beam deviation |
| Littrow Configuration | Incident and reflected beams share similar optical path |
| Transmission | High optical transmission |
| Surface Accuracy | λ/4 – λ/10 @ 633 nm |
| Surface Quality | 20-10, 40-20 scratch-dig |
| Apex Angle Accuracy | Precision controlled |
| Dimensions | Custom sizes available |
| Edge Treatment | Fine ground, chamfered or polished |
| Coating Options | Uncoated, broadband AR, laser AR, reflective coating, UV AR, custom coating |
Littrow Prism Structure
Why Choose Chenyu Optics for Littrow Prism
Chenyu Optics focuses on drawing-based precision prism manufacturing for spectroscopy, laser and research optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard Littrow prisms.
Manufacturing Capability for Littrow Prism
Precision Polishing
Controlled polishing and apex angle processing for surface accuracy, surface quality and stable wavelength separation performance.
Optical Coating
Broadband AR, laser AR, reflective and UV AR coating options for entrance, exit and Littrow reflection surfaces.
Inspection & Packaging
Dimensional inspection, apex angle verification, optical performance checking and clean protective packaging before shipment.
Custom Manufacturing Options for Littrow Prism
Dimensions & Geometry
Custom size and apex angle can be manufactured according to customer drawings, with precision control matched to the target wavelength requirement.
Surface & Mechanical Quality
Surface accuracy, surface quality and apex angle accuracy can be selected according to spectral resolution requirements and mounting structure.
Coating & Wavelength Design
Uncoated surfaces, broadband AR, laser AR, reflective and UV AR coatings can be specified for entrance, exit and Littrow reflection faces.
Littrow Prism Material Comparison
| BK7 | Fused Silica | UV Fused Silica | |
|---|---|---|---|
| Transmission | Visible to near-infrared, limited UV performance | UV to NIR, depending on grade | Deep UV to visible, optimized UV transmission |
| Thermal Stability | Moderate thermal stability | Excellent, low thermal expansion | Excellent, low thermal expansion |
| Typical Use | General visible spectroscopy and cost-sensitive systems | Broadband spectroscopy, laser wavelength selection | UV spectroscopy, UV laser systems, analytical instruments |
| Selection Note | Preferred for general visible applications with lower cost requirements | Preferred when broadband UV-to-NIR performance is required | Preferred when deep UV wavelength selection is required |
Applications of Littrow Prism
Spectroscopy Systems
Wavelength separation for spectroscopy and spectral analysis instruments.
Laser Wavelength Selection
Wavelength-selective feedback elements for laser systems.
Tunable Laser Systems
Precision angular control for tunable laser cavity designs.
Optical Measurement Instruments
Wavelength-selective optics for precision measurement equipment.
Interferometry Systems
Stable beam path optics for interferometric measurement setups.
Research Optical Instruments
Precision optical components for laboratory and research optical setups.
Littrow Prism FAQ
What is a Littrow prism used for?
A Littrow prism is mainly used for wavelength separation, spectral analysis and laser wavelength control systems.
What is the Littrow configuration?
The Littrow configuration allows incident and reflected beams to follow approximately the same optical path, which is useful for compact spectral systems.
Can Littrow prisms be used in laser systems?
Yes. They are commonly used in laser wavelength selection and tuning applications.
Can custom Littrow prisms be manufactured?
Yes. Custom materials, apex angles, dimensions and coatings can be manufactured according to optical requirements.
What information should I provide for a quotation?
Please provide material, dimensions, apex angle, surface quality, surface accuracy, coating requirement, quantity and drawing if available.
Where can I learn more about optical prisms?
Additional optical prism information can be found from Edmund Optics.
Related Products for Littrow Prism
Need Custom Littrow Prisms?
Send us your drawing, material preference, apex angle, dimensions, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable Littrow prism manufacturing suggestion.