Unpackaged Laser Diodes

Unmounted Laser Diode Unpackaged Laser Diode

What are Unpackaged Laser Diodes?

Unpackaged laser diodes or unmounted laser diodes are single-emitter laser diode chips or laser diode arrays (laser diode bars) which are not mounted to a heatsink and lack any exterior packaging. There are instances in which unmounted laser diodes are preferred, to be mounted or packaged by the integrator.

Our Unmounted Laser Diode Products

High-power Laser Bars for Optical Pumping and Direct-Diode-Laser (DDL) Applications in Materials Processing, Medicine, or Sensing

RPMC Lasers provides a wide range of unpackaged laser diode options. Some of these options include wavelengths ranging from 760 nm up to 1060 nm, single-emitter laser diode chips with up to 10 W output power and laser diode arrays / laser diode bars with up to 350 W output power, and continuous wave (CW) and quasi-continuous wave (QCW) options.

We produce our semiconductor materials under the strictest quality controls. We work only with state-of-the-art epitaxy, processing, and facet coating technology. Our bars, semi-bars, and single emitters meet the most exacting demands: They are extremely reliable, efficient and durable.

Our semiconductor products are easily assembled using standard soldering methods. The material supports both soft solder (indium) and hard solder (gold/tin). We deliver our laser bars to you with emitter structures separated on the p-side as standard. On request, we can also produce bars with continuous p-side metalization and adapted facet coatings, using low AR coatings for the assembly of external resonators.

Correlating with the fill factor we distinguish three product groups for our 10 mm wide bars, each supporting particular applications and operating regimes:

  • Low fill factor bars (typ. ≤ 30% fill factor) featuring low beam-parameter-product (BPP) suited for fiber coupling
  • High-power bars (typ. 50% fill factor) for up to 300 W cw- and hard-pulse (hp) operation suited for optical pumping and direct-diode-laser (DDL) applications
  • QCW bars (typ. FF > 65% fill factor): for up to 500 W qcw- and long-pulse (lp) operation suited for optical pumping and medical applications


  • Highest quality: We strictly monitor the production of our semiconductor products in clearly defined processes.
  • Powerful: High, reliable output power and ideal beam characteristics.
  • Economical: Our semiconductors are very efficient and are characterized by a long service life.

Jenoptik laser diodes are well-known as the high-quality industry standard for medical and industrial applications. Jenoptik is an established company which is present in more than 80 countries. Consequently, their diode lasers are known for their high efficiency and reliability. Finally, to ensure the highest possible quality, long service life, with dependable deliveries, Jenoptik manufactures all laser diodes bars in-house.

JDL Series

The JDL Series of unmounted laser diode bars are available in CW or QCW configurations in wavelength from 760nm – 1064nm. Various emitter configurations and cavity lengths are available offering up to 200W CW and 500W QCW output powers.