All modules are equipped with an optional 10 or 15 µm step-index single-mode fiber input that can easily be spliced to a seed source. The gain medium is our industry-leading DC-200/40-PZ-Yb fiber providing the largest single mode MFD in the industry.
The gain fiber is heatsunk to the aluminum base plate that can be clamped to e.g. a water chilled plate or an air-cooled heat sink. The output end of the module is equipped with a large AR-coated endcap that provides mode expansion and reduces reflections. Excess pump light is effectively removed by the integrated residual pump dump.
The high pointing stability and low nonlinearity enable a really flexible and versatile laser architecture where the same aeroGAIN-BASE module can be used for amplification of fs-, ps- and ns pulses, with high-frequency conversion efficiency whenever needed.
For optimal performance, the aeroGAIN-BASE modules are designed for counter-propagating pumping through the output end-cap. The end-cap and the last part of the gain fiber are mounted in a water-cooled housing (aeroGAIN-BASE-1.1 and 1.2) to ensure maximum performance and lifetime.
Features
- Truly single-mode polarized system
- High power with low nonlinearity
- Excellent pointing stability
- Robust Industrial construction
- 10 or 15 µm step-index fiber input
- Easy thermal management
- Long proven lifetime
| Model | Yb Fiber Length | Rated output power | Recommended signal wavelength |
| aeroGAIN-BASE-1.1 3.0m | 3.0 m | 75 W | 1060-1070 nm |
| aeroGAIN-BASE-1.2 1.8m | 1.8 m | 75 W | 1030-1040 nm |
| aeroGAIN-BASE-1.3 1.8m | 1.8 m | 30 W | 1030-1040 nm |
Specifications/Optical
| Seed input | |
| Signal wavelength | aeroGAIN-BASE-1.1: 1060 – 1070 nm aeroGAIN-BASE-1.2 and -1.3: 1030-1040 nm |
| Recommended signal input power | > 500 mW for high power operation |
| Recommended pulse duration | fs, ps or ns pulses |
| Signal input fiber | Optional: 10 µm PM core fiber 125 µm / 250 µm 15 µm PM core fiber 250 µm / 350 µm |
| Signal Output | |
| Max signal gain | < 20 dB (max 75W out) |
| Rated output power | aeroGAIN-BASE-1.1 and -1.2: 75W aeroGAIN-BASE-1.3: 30W |
| M2 | ≤ 1.3 |
| Mode field diameter | 31 ± 2 µm |
| PER | ≥ 15 dB |
| Typical optical efficiency* | > 70 % |
| Typical core to clad power ratio* | > 96 % |
| Pump Input | |
| Pump center wavelength | 976 ± 2 nm |
| Maximum pump power Pp | 100 W @ fiber facet |
| Recommended pump NA | ≤ 0.22 (max NA < 0.55) |
| Recommended pump type | Fiber delivered 200/0.22 (max NA<0.55) |
| Pump cladding diameter | 200 ± 2 µm |
* Evaluated with 2 W input power at 1064 nm and 75 W output power
Mechanical
| Base plate dimensions (HxBxW)* | See drawing |
| Weight | 1.8 kg (without tooling plate) |
| Length of input pigtail | 1 m |
| Output end facet angle | 0 degree |
| Endcap length / diameter | 6 mm / 7 mm** - AR coated |
* The system is shipped on a larger tooling plate that can also be used for mounting the module during test
** Open aperture
Water cooling
(aeroGAIN-BASE-1.1 and -1.2 only)
| Cooling flow for the base | 4 ± 2 liter/minute |
| Cooling flow in the tube | 0.2 - 0.5 liter/minute |
| Cooling water temperature | 25 ± 5°C |
| Max temperature of base-plate | 35 °C |
Reliability
All modules are assembled and tested in cleanrooms. The aeroGAIN-BASE-1.1 and -1.2 come mounted on a tooling plate to ensure the endcap is clean. This tooling plate can also be used as a mount in the laboratory.
The aeroGAIN-BASE design has proven its industrial 24/7 reliability through a significant number of long-term tests including continuous 25,000 hours operation at 55 W output power. Lifetime in specific OEM systems depends on pump power, pump wavelength, cooling efficiency, etc. Get in touch for supporting system design.
