Specifications:
| Materials | Optical Glass | Coating Wavelength Range | 790-990nm |
| Coating | BBAR Coating (790-990nm) | Coating Specification | Ravg<1.0%@790-990nm |
| Design Wavelength | 808nm | Height Tolerance | ±0.05mm |
| Length Tolerance | ±0.05mm | Dimension | Custom |
| Surface Flatness | λ/4 | Width Tolerance | ±0.01mm |
| Transmission | >99% | Numerical Aperture | 0.8 |
| Collimation Power | >80% within 1.15xDIV; >85% within 1.30xDIV |
Application Notes: Apart from the 790-990nm AR coating, we can also provide other custom coating options, in addition to attached mounts, and sustaining structures.
Modules or Types:
Shalom EO provides the following standard modules of fast-axis collimators. Besides, we also accept custom orders.
| Type | FAC300 | FAC360 | FAC600 |
| Effective focal length EFL (μm) | 300±70@940nm | 360±70@940nm | 600±70@940nm |
| Back Focal Length (μm) | 70±30@940nm | 70±30@940nm | 140±30@940nm |
| Residential Divergence@X% Power Enclosure | ±2.50@85% | ±2.00@85% | ±1.50@85% |
| Numerical Aperture (Design) | 0.8 | 0.8 | 0.8 |
| Wavelength (nm) | 780-1000/430-470 | 780-1000 | 780-1000 |
| Broadband AR-Coating Reflection avg. (AOI) [%] | Ra <= 0.4 (0°- 35°) | Ra <= 0.4 (0°- 35°) | Ra <= 0.4 (0°- 35°) |
| Coating Durability | MIL-C-675 | MIL-C-675 | MIL-C-675 |
| Dimensions (Height x Thickness x Length) [mm] | 0.5(±0.05)x0.43(±0.03)x4.0(±0.05) | 0.6(±0.05)x0.53(±0.03)x4.0(±0.05) | 1.0(±0.05)x0.82(±0.03)x4.0(±0.05) |
| S1 Clear Aperture (Height x Length) [mm] | 0.3x3.5 | 0.3x3.5 | 0.3x3.5 |
| S1 Surface Imperfections (acc. MIL-PRF-1380B) | 20-10 | 20-10 | 20-10 |
| S2 Clear Aperture (Height x Length) [mm] | 0.4X3.5 | 0.5X3.5 | 0.9X3.5 |
| S2 Surface Imperfections (acc. MIL-PRF-1380B) | 20-10 | 20-10 | 20-10 |
| Edge Chipping (mm) | 0.1 | 0.1 | 0.1 |
Fast Axis Collimators (FAC-Lenses) are cylindrical lenses each with an aspheric optical front and a flat backside aimed for collimating spreading light beams from a Diode Laser along the fast axis direction. The FAC lenses collimate the diverging laser lights from a laser diode into paralleled beams and adjust the beam shape from elliptical to circular. A fast-axis collimator is the most important component in the high-power laser diode to ensure effective utilization of the diode-generated laser light.
Hangzhou Shalom offers Standard and Custom Aspheric Fast Axis Collimators. Our fast axis collimators highlight large numerical apertures (NA 0.8), and AR coatings with minimized absorption for high-power applications making it possible to collimate all portions of diode output with excellent beam qualities. Optimized beam-shaping effectiveness for diode lasers is assured through high transmission and superior collimation excellence close to the diffraction limits.
The standard aspheric fast axis collimators are made of UV Fused Silica, the product is compatible with the 6000-30000W continuous laser. Our standard Aspheric Fast Axis Collimators are available in diameters of 38.1mm and 50.8mm, coating options include 790-990 nm standard AR coatings or custom coatings, and focal length options include 300μm/360μm/600μm effective focal lengths. Within the working wavelength range, our fast axis collimator supports an eminent optical transmission greater than 99%.
Regarding the custom aspheric fast axis collimators, various specifications such as the glass material and the dimensions of the fast axis collimators can all be customized upon your inquiries.
In addition, our Slow Axis Collimators could be used in combination with the FAC lenses to create custom collimation combinations for laser bars and other applications.
The major functions of our fast axis collimators include:
