The Refractive Beam Shaper converts a Gaussian laser beam into a collimated flat top beam with nearly 100% efficiency. This exciting capability, enabled by Newport’s high precision aspheric optics, results in simple-to-use, rugged, and efficient beam shaping that can be readily integrated into your material processing, micro machining, non-linear optics, optical data storage, cell sorting or other applications.
The Refractive Beam Shaper produces a collimated flat top beam by point-to-point mapping of the Gaussian input rays to redistribute the intensity to a flat top output. The collimated output beam can be easily manipulated and re-sized with conventional imaging optics. Using low dispersion refractive optics, Newport's beam shapers provide a 20-50% throughput improvement over diffractive solutions.
Expansion to the specified input beam diameter and spatial filtering of the input beam will likely be required to achieve the optimum output performance of the beam shaper.
The visible Refractive Beam Shaper is based on patented technology from IBM Research. The ultraviolet and near-infrared refractive beam shapers have no internal focus, making them ideal for higher energy pulsed and CW laser applications.
The GBS-UV-H Beam Shaper is constructed of Ultraviolet safe components and processed in our Class 5 clean room to minimize out gassing and particulate generation. The aluminum housing is electroless Ni coated and every component is ultrasonically cleaned prior to assembly. The GBS-UV-H is double-bagged in the Class 5 environment to assure the highest level of cleanliness. A protective carrying case is included for safe storage when not in use.
Contact Newport regarding additional wavelength ranges or your unique applications.
Input Beam
Cross Sections of the Input and Output Beams
Output Beam
Contact Newport regarding additional wavelength ranges or high-energy applications.
Specifications
| Model |
GBS-AR14
|
GBS-NIR-H3
|
GBS-UV-H
|
| Wavelength |
430-700 nm |
800-1120 nm |
245-440 nm |
| Profile Accuracy (At 50mm Output Distance) |
<10% RMS Deviation from Flat Top (1) |
<10% RMS Deviation from Flat Top (1) |
<15% RMS Deviation from Flat Top (1) |
| Wavefront Distortion (At 0.5 Meters Output Distance) |
≤ λ/4 PV at 633 nm |
≤ λ/4 PV at 633 nm |
≤ λ/4 PV at 365 nm |
| Transmission |
>97% |
>97% |
>97% |
| Input Beam Characteristics |
Collimated Gaussian Beam |
Collimated Gaussian Beam |
Collimated Gaussian Beam |
| Input Beam Diameter (Ideal) |
4.732 mm at 1/e2 |
5.0 mm at 1/e2 |
5.0 mm at 1/e2 |
| Mode |
TEM00 |
TEM00 |
TEM00 |
| M2 |
<1.5 |
<1.5 |
<1.5 |
| Energy Density |
<0.1 mJ/cm2, 10nsec pulses at 532 nm |
<10 J/cm2, 10nsec pulses at 1064 nm |
<2.5 J/cm2, 10nsec pulses at 266 nm |
| Output Beam Characteristics |
Collimated Flat Top |
Collimated Flat Top |
Collimated Flat Top |
| Output Beam Diameter |
8.1mm at FWHM |
8.0mm at FWHM |
8.0mm at FWHM |
(1)The RMS specification for the profile accuracy of the beam shaper leaves latitude for a wide variation in peak-to-peak profile deviations. These variations arise due to small slope error deviations in the very small aspheric lenses used in the beam shaper. Any error, even within manufacturing tolerances, can map the beam into large deviations from a flat profile in the output.
