Diode Laser Efficiency Calculator

How to Use This Calculator

1. Enter the Input Power of your diode laser in watts. This is the electrical power supplied to the laser.
2. Enter the Output Power of your diode laser in watts. This is the optical power emitted by the laser.
3. Click the Calculate button to compute the efficiency and classification.
4. The calculator will display the efficiency as a percentage and classify the laser based on its efficiency.

Understanding Laser Efficiency

Laser efficiency is a measure of how effectively a laser converts electrical power into optical power. It is typically expressed as a percentage:

Efficiency (%) = (Output Power / Input Power) × 100%

The higher the efficiency percentage, the more effectively the laser converts electrical power to light. Typical efficiencies for diode lasers range from 30% to over 70%.

Laser Efficiency Classification

• Excellent (≥70%): State-of-the-art commercial diode lasers with very high efficiency.
• Good (50%-69%): High-quality commercial diode lasers with good efficiency.
• Fair (30%-49%): Standard commercial diode lasers with moderate efficiency.
• Poor (≤29%): Low-efficiency diode lasers, often found in older or budget models.

Important Notes

For accurate results, ensure you are using the same units (watts) for both input and output power. The output power should never exceed the input power, as this would indicate measurement errors.