High-Power Laser Diode Specifications Table
High-power laser diodes are characterized by wavelength, optical power, pulse width, peak power, duty cycle, and fiber coupling, with specifications varying by model and application.
Key Parameters of High-Power Laser Diodes
| Parameter | Description | Typical Values / Notes |
|---|---|---|
| Nominal Wavelength (nm) | The lasing wavelength of the diode | 450, 785, 808, 830, 905, 915, 940, 980, 1064, 1470 |
| Optical Power (W) | Continuous or peak output power | From several mW up to hundreds of W; pulsed peak power can reach 20–60 W or higher |
| Pulse Width (ns) | Duration of each pulse | Adjustable, typically 1–2000 ns depending on module type |
| Peak Power (W) | Maximum instantaneous power during a pulse | 20–60 W for standard pulsed modules; multi-Watt peak power for high-speed modules |
| Duty Cycle (%) | Ratio of pulse duration to repetition period | 0.1–10%, depending on pulse width and peak power |
| Repetition Rate (kHz) | Frequency of pulse emission | Adjustable; depends on module and application |
| Fiber Coupling | Output fiber core diameter and type | Standard: 105 µm core, 62.5 µm available on request; SMA905 connector common |
| Rise/Fall Time (ns) | Time for optical power to rise/fall | Down to 1 ns for high-speed modules |
| Temperature Control | Junction or case temperature regulation | Often includes TEC (thermoelectric cooler) and air-cooled options |
| Safety Classification | Eye safety and handling | Must follow IEC 60825-1; infrared diodes are hazardous to eyes |
Notes on Usage and Selection
- Optical Power vs. Temperature: Higher temperatures reduce achievable optical power at a given current; current must be increased to maintain output .
- Wavelength Tuning: Lasing wavelength shifts with junction temperature and optical power; careful thermal management is required .
- Pulse Adjustments: Many high-power pulsed diodes allow adjustable pulse width, peak power, and repetition rate for applications like LIDAR, R&D, or laser lighting .
- Fiber-Coupled Options: Fiber-coupled diodes simplify beam delivery and integration into optical systems; core diameter affects beam quality and coupling efficiency .
- Driver Requirements: High-power diodes often require dedicated drivers with low jitter triggering, voltage conversion, and synchronization capabilities . This table provides a comprehensive overview of high-power laser diode parameters for design, research, or procurement purposes, covering both continuous-wave and pulsed modules across visible and infrared wavelengths.
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