High Peak Power Laser
RT-HPP-FP-QCL
Alpes Lasers introduces its new high peak power sources. Based on a unique gain-guided design, these Quantum Cascade Lasers are optimized for emitting short pulses from 20 ns to 1000 ns with minimum peak power of 20 W, or ~5 microjoules per pulse. Available on submount or in a HHL package with a dedicated driver, these lasers can be used for free-space optical communications, LIDAR applications and IR countermeasures.
You can read more about the technology behind these high peak power devices in this Optics Express paper.
The beam divergence of these lasers is much reduced in the horizontal axis compared to standard high power or low power devices. This is due to the unique large width of the active region of the gain-guided laser technology. Typical beam shapes are shown in the picture on the right. Other characteristics are shown in the table below.
| Electro-optical Characteristic | Min. | Typ. | Max. | Note |
|---|---|---|---|---|
| Peak Power | 20W | 25W | 30W | |
| Output Spectrum | Multimode | |||
| Spectral Width | 50 cm-1 | 100 cm-1 | 150 cm-1 | |
| Duty Cycle | 0 | 1% | 20% | |
| Central Wavelength | 4.57 μm | |||
| Wall-Plug Efficiency | 5% | |||
| Beam Shape | Single-lobed | |||
| Horizontal Beam Divergence of laser chip | 50 mrad | 90 mrad | 120 mrad | Half angle beam divergence at 1/e^2 of maximum |
| Vertical Beam Divergence of laser chip | 650 mrad | Half angle beam divergence at 1/e^2 of maximum | ||
| Pulse Width | 20 ns | 300 ns | 1000 ns | |
| Submount | AN-NSP | Can be installed in LLH or HHL housing with an elliptical beam output | ||
| Driver | S-2 | Laser as operated with S-2 driver can yield stated performance. Sold separately. | ||
| Heatsink Cooling capacity | 25W | 35W | 65W |
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