Optimized beamsplitter designs demonstrating superior laser damage performance for each unique wavelength, split, and incident angle combination. High-energy coatings are optimized to accommodate specific application requirements.
For maximum power handling, we recommend optically contacted cubes or plate beamsplitters. For durability and handling, we suggest cube beamsplitters.
Cube beamsplitters can divide the incident beam based on polarization (S or P) or power (ratio of energy into each arm). The S and P polarization components are separated by reflecting the S component at the dielectric beamsplitter coating while the P component passes through the cube.
Alignment markings on the cubes ensure correct placement in the optical path. Beamsplitting cubes are easy to mount and mechanically durable. Our cube beamsplitters may be provided cemented, optically contacted, or even air-spaced. For some applications, higher power handling and lighter weight is required.
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Plate varieties are preferred in high laser energy applications, or where cost or weight limits on the assembly come into play. They are typically designed to work at 45° angles, though other angles can often be specified.
There are two trade-offs for the convenience of the plate beamsplitter:
- The physics of the plate component generates a beam offset of the secondary beam. This offset distance is dependent upon the thickness of the substrate.
- A ghost beam is generated by the reflection of the secondary beam as it encounters the back surface of the substrate. An anti-reflection coating on the exit surface of the substrate can minimize the ghost beam.
Selection of the appropriate beamsplitter design is dependent upon several factors:
- Polarizing or non-polarizing
- Non-polarizing beam ratio (examples: 50-50, 70-30, 90-10)
- Wavelength separation
- Power handling (high power or high incident laser energy)
- Ghost reflection tolerance
- Beam displacement tolerance
- Cube or plate
|Wavelength ranges||240 nm to 5000 nm||240 nm to 5000 nm|
|Dimensions||5 - 150 mm diameter||5x5x5 mm - 50x50x50 mm typical|
|Beamsplitting options||Polarizing or non-polarizing||Polarizing or non-polarizing|
|Beam ratios from 90-10 to 50-50||Beam ratios from 90-10 to 50-50|
|Wavelength separation||Wavelength separation|
|Long pass or short pass||Long pass or short pass|
|Coating options||E-beam dielectric optimized for LIDT||E-beam dielectric optimized for LIDT|
|Back surface AR coating to minimize ghosting|
|Low phase shifting coating designs|
G&H has received IS09001 certification across all of its manufacturing sites while AS9100C certification has been achieved at select facilities.
From high transmission broadband anti-reflection coatings to V-coats for high energy applications, our extensive coating capabilities for precision optical components deliver performance across the spectrum from the UV to the FIR. Take a closer look at our optical coatings service.
We have made a significant investment in metrology equipment to ensure that our customers receive quality, high-performing precision optical components. More details on our metrology capabilities can be found on our metrology page.
Environmental testing of components and coatings is critical for the assurance of performance in rugged conditions. G&H environmental testing capabilities include MIL-C-675C, MIL-C-48497A, MIL-E-12397, and MIL-M-13508C for endurance against abrasion, adhesion, humidity, temperature, and environmental conditions.
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