Laser Drivers

The function of a laser driver is to deliver the exact amount of current set, and at whatever voltage is needed, to the laser diode in a circuit. As a result, they protect the laser diode from damage. 

Laser driver applications

Laser drivers are used in a variety of applications, from diagnostic and analytical equipment in the medical field to welding.

Why does a diode need a laser current driver?

An often overlooked factor in using laser diodes in circuits is the influence of temperature on the output power and operating current. 

While the threshold current rises as the temperature increases, the optical output power and differential efficiency decrease. The driver circuit therefore needs a safety feature that ensures that a significant temperature increase will not destroy the laser – a laser driver fulfils this need.

Laser drivers provide closed-loop control of the average optical power of a continuous wave (CW) laser diode. The control loop adjusts the laser to maintain a constant current and power. This ensures a regular temperature and so protects the laser from heat damage. 

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Nombre de résultats par page
Description Prix Diode Types Driven Laser Type Driven Maximum Laser Diode Current Maximum Output Current Dimensions Package Type Number of Pins Length Maximum Supply Voltage Minimum Supply Voltage Width Power Dissipation Series Supply Voltage Range
N° de stock RS 189-8876
Référence fabricantMAX3736ETE+
7,13 €
- SFP 22 (Typ.)mA - 3 x 3 x 0.75mm QFN 16 3mm +6V -0.5V 3mm 2W - -0.5 → +6 V
N° de stock RS 191-4721
Référence fabricantMAX3738ETG+
2,034 €
Each (In a Pack of 5)
- SFF, SFP - - 4.1 x 4.1 x 0.8mm QFN 24 4.1mm +6V -0.5V 4.1mm 2222mW - -0.5 → +6 V
N° de stock RS 191-4278
Référence fabricantMAX3738ETG+
1,719 €
Each (In a Tube of 75)
- SFF, SFP - - 4.1 x 4.1 x 0.8mm QFN 24 4.1mm +6V -0.5V 4.1mm 2222mW - -0.5 → +6 V