Datasheet
Diode Lasers
Single Bar Diode Laser
Conduction-cooled single bars are well introduced in the market and are an industry standard in terms of size and footprint. At Coherent, these laser bars are available in a very wide range of wavelengths and powers, with optional beam shaping such as fast-axis collimation, both-axis collimation, or even further focused to a defined spot size. Also available are options such as spectral locking and line narrowing, using Volume Bragg Gratings. (VBG)
Features
- Industry standard size and footprint
- High reliability and consistency
- Hard solder available for harsh drive conditions
- Low smile
- Optional beam shaping
- Optional spectral locking and line narrowing
- Narrow heat sink variant available for side-by-side placement
- Variants with different beam height on request
Applications
- Pumping of solid-state lasers
- Materials processing and annealing
- Medical
- Graphic arts
Datasheet
| Parameter | MDL1550SB25M |
|---|---|
| Package | Conduction-Cooled Single Bar |
| OPTICAL PARAMETERS1 | |
| Center Wavelength Range3 (nm) | 1550 |
| Center Wavelength Tolerance3 (nm) | +/-20 |
| Output Power2 (W) | 25w |
| Number of Emitters | 19 |
| Emitter Size (µm) | 100 |
| Fill Factor (%) | 20 |
| Operating Condition | CW |
| Spectral Width (FWHM) (nm) | ≤12 |
| Slope Efficiency (W/A) | ≥0.43 |
| Fast-Axis Divergence without Optics (90%) (degree) | ≤72 |
| Fast-Axis Divergence with Fast-Axis Collimation (mrad) | ≤8 |
| Slow-Axis Divergence (90%) (degree) | ≤8 |
| Wavelength Temp. Coefficient (nm/°C) | ~0.62 |
| Beam Geometry after FAC Lens (mm x mm) | ~0.8 x 10 |
| ELECTRICAL PARAMETERS1 | |
| Power Conversion Efficiency (%) | ≥24 |
| Threshold Current (ITH) (A) | ≤15 |
| Operating Current (IOP) (A) | ≤85 |
| Operating Voltage (VOP) (V) | ≤1.20 |
| Duty Cycle5 (%) | 100 |
| THERMAL PARAMETERS1 | |
| Operating Temperature Range3,4 (°C) | +20 to +30 |
| Storage Temperature Range4 (°C) | 0 to +55 |
| Recommended Heat Sink Capacity (W) | ≥80 |
Notes:
1. Data at 25°C cold plate temperature.
2. Reduced lifetime if used above nominal operating conditions.
3. Others available upon request.
4. A non-condensing environment is required for storage and operation below the ambient dew point.
5. Custom pulse length / duty cycles on request.