Seeding & Pumping
Diode Lasers for Seeding
Seeding means providing a very stable, narrow-linewidth, and coherent “starter” laser beam to control the output of another laser (like a fiber laser or solid-state laser).
Purpose:
- Define the output wavelength of the main laser with high precision.
- Improve coherence and spectral purity.
- Reduce noise and mode hopping in the main laser.
Diode lasers can be engineered to produce very narrow spectral lines, perfect for defining a seed frequency. They are smaller and very power-efficient.


Diode Lasers for Pumping
Pumping means providing the energy source to excite the gain medium of another laser so it can achieve population inversion and lase.
Purpose:
- Supply the optical energy needed to “pump” atoms/ions in a gain medium (e.g., Nd:YAG crystal, ytterbium-doped fiber) into excited states.
Advanced diode lasers can exceed 50% wall-plug efficiency. They can be engineered to emit at wavelengths that match absorption bands of gain media, making pumping highly efficient and reducing heat load. They are very compact and require less to zero maintenance.










