When Light Needs to Arrive on Cue

A pulsed laser is defined by how precisely optical energy is delivered over time. Short bursts serve a different purpose from continuous emission when high peak power or controlled timing is required, particularly in time-sensitive optical applications.

The choice of a pulsed laser diode depends on pulse duration, peak output power, wavelength and coupling configuration. Fabry-Perot devices address higher peak power, while DFB designs generate ultra-short pulses through gain switching. FBG-based solutions are offered for nanosecond pulse generation.

Three Approaches to Pulsed Operation

There is no single architecture for every pulsed application. The laser structure and operating mode determine temporal characteristics and output power.

The portfolio includes:

• Fabry-Perot laser diodes with peak optical power up to 1000 mW and CW output up to 400 mW;
• DFB laser diodes producing 50 ps pulses through gain switching, with peak power up to 300 mW;
• FBG laser solutions for nanosecond pulse generation.

The distinction matters in integration. A high-power Fabry-Perot device can suit fiber-laser seeding, while a DFB source can provide ultra-short pulses. Pulsed assemblies can also combine laser diodes with dedicated nanosecond or picosecond drivers.

The Specifications Behind the Pulse

Pulse width is only one part of the specification. Peak forward current, repetition rate, wavelength and optical output also affect operation, while packaging and fiber coupling influence system integration.

Innolume GmbH lists fiber-coupled DFB pulsed laser diodes at wavelengths including 1015, 1024 and 1060 nm, with peak output power of 300 mW. Listed pulse widths are 0.05 ns or 500 ns, depending on configuration.

Fabry-Perot solutions include fiber-coupled devices with up to 1000 mW peak power and 400 mW CW output. Some models use PM980 or HI1060 polarization-maintaining fiber, with optional loose tube and monitor photodiode. Applications include fiber-laser seeding, measurement equipment and scientific research.

Matching the Source to the System

Pulsed semiconductor lasers become particularly useful when a source must meet defined temporal and optical requirements rather than simply provide light at a selected wavelength. Choosing the appropriate laser structure, pulse regime and package can make integration more straightforward and help match the source to the requirements of the complete optical system.

Innolume GmbH develops and manufactures pulsed laser diodes in several configurations, including Fabry-Perot and DFB devices, as well as FBG-based solutions for nanosecond operation. Custom wavelengths are also available on request. The portfolio covers different pulse characteristics and power levels for fiber-laser seeding, measurement and research, with configurations suited to various integration requirements.