High Power Laser Diodes

A pump laser diode is the light source everything else in a fiber laser is built around. These are fibre-coupled diodes in the 793 nm, 808 nm and 976 nm bands — the wavelengths that match the absorption peaks of thulium, neodymium and ytterbium/erbium respectively — from 3 W single-emitter parts up to 540 W multi-emitter modules.

Choosing the wavelength by what you are pumping

793 nm — thulium-doped fiber, for 2 µm sources. The absorption is narrow, so wavelength and temperature stability matter more here than at 976 nm.
808 nm — Nd:YAG and Nd:YVO₄, the classic solid-state pump band.
976 nm and 980 nm — ytterbium and erbium. 976 nm is the sharp Yb peak used in high-power fiber lasers; 980 nm is the Er band, for amplifiers and single-mode pumping.

The power ladder

Within a wavelength the family steps up in output power rather than in beam quality: a 4 W and a 50 W part at 793 nm are the same device class with more emitters behind the same delivery fiber. Choose the smallest part that covers the pump budget — power in excess of what the gain fiber absorbs turns into heat in the combiner, and that is a common cause of failures blamed on the combiner.

Fiber-coupled pump diodes

Model	Wavelength	Output power	Output
HJ793D02RN	793 nm	4 W	Multimode fiber coupled
HJK793DB2RN	793 nm	8 W	Multimode fiber coupled
HJ793DA3RN	793 nm	12 W	Multimode fiber coupled
HJ793DAERN	793 nm	16 W	Multimode fiber coupled
HJ793DA5RN	793 nm	30 W	Multimode fiber coupled
HJ793DG5RN	793 nm	50 W	Multimode fiber coupled
HJK808DAHFN	808 nm	15 W	Multimode fiber coupled
HJK808DA5FN	808 nm	35 W	Multimode fiber coupled
HJ976A02RN	976 nm	3 W	Multimode fiber coupled
HJ976AB2RN	976 nm	9 W	Multimode fiber coupled
HJ976AA2RN	976 nm	18 W	Multimode fiber coupled
HJ976AA3RN	976 nm	27 W	Multimode fiber coupled
HJK976AA5RN	976 nm	60 W	Multimode fiber coupled
HJK976BN1RN	976 nm	200 W	Multimode fiber coupled
HJM976	976 nm	540 W	Multimode fiber coupled

Single-mode 980 nm pump diodes

For erbium amplifiers and low-power pumping, where a single-mode output is wanted rather than a multimode delivery fiber:

Model	Wavelength	Note
980 nm Pump Laser Diode	980 nm	single mode
980 nm Pump Laser Diode, up to 700 mW	980 nm	up to 700 mW
Lucent SL980S33C	980 nm	160 mW

Priced per configuration — request a quote for current pricing, fiber core size and connector options. Each product page links its datasheet with output power, wavelength tolerance, fiber specification and cooling requirements; those figures differ per model and are deliberately not summarised here.

What a pump diode is bought with

A pump diode is almost never used on its own. In a working chain it feeds a pump and signal combiner that gathers several diodes into one fiber, usually with a fiber isolator protecting it from backward light, and in bidirectional or sensing systems a circulator.

Narrow-linewidth work sits at the other end of the catalogue: DFB laser diodes and single-frequency, SLM and wavelength-stabilised diodes.

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$995.00

980 nm Pump Laser Diode up to 700 mW

980 nm Pump Laser Diode up to 700 mW Description: The 980 nm pump laser diodes utilize a planar construction with a chip on subcarrier. The high-po...

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$995.00

from $660.00

980 nm Pump Laser Diode

980 nm Pump Laser Diode Description: The 980 nm pump laser diodes utilizes a planar construction with chip on subcarrier. The high power chip is he...