January 17, 2022

EXALOS presents new combined-SLED modules and groundbreaking 488nm Laser Diodes and SLEDs at Photonics West in San Francisco

Combined SLED Modules

EXALOS’s new combined-SLED modules are high-performance, ultra-broadband, fiber-coupled light sources based on superluminescent light emitting diodes (SLEDs). Using an automated, high-precision alignment robot, the output beams of the individual SLEDs are combined using micro-optical lenses and free-space optics to a single, highly polarized output beam that is coupled into a single-mode or polarization-maintaining output fiber. Standard combi-SLEDs are available in the near-infrared, for wavelengths ranging from 750nm to 1600nm, or in the visible range with wavelengths from 650nm to 405nm. The combi-SLED products are highly customizable and meet highest performance and reliability demands.

Photo of open RGB SLED module

For the first time, a combination of up to four SLEDs are now integrated into a standard 14-pin butterfly package, achieving, for example, an ultra-broadband output spectrum with a 3dB bandwidth of 165nm at a center wavelength of 830nm, which translates into a coherence length of 2.5 microns in air. At the same time, the optical output has a high output power of 15 mW and a high polarization extinction ratio of more than 20 dB. These combi-SLED sources are also available on a multi-channel driver boards that can be easily integrated into an OEM system, supporting remote operation through a USB interface as well as a digital and analog control interface. Furthermore, these driver boards support fast on-off modulation with rates up to a few 100 kHz.


  • Compact 14-pin Optical Module
  • Ultra-broad optical spectrum
  • High output power
  • Ultra-low noise (RIN)
  • Multiple spectral ranges
  • Polarization aligned
  • Compact OEM device with drive electronics available


  • Optical Coherence Tomography
  • Biomedical Imaging
  • Fiber Sensor Interrogation
  • Component Testing
  • Spectroscopy

EXALOS can offer SLEDs (or LDs) over a wide spectral range from the near-UV (390 nm) to the near-IR (1700 nm). Each combination of SLEDs leads to different optical output power levels of roughly 10mW to 40mW and 3dB Bandwidths of 100nm to 300nm or more. Other combi-SLED modules and micro-optical integrated products can be realized upon request

488nm Laser Diodes and SLEDs

EXALOS has realized a new milestone of its high-performance GaN-based light sources and is introducing high-power 488nm laser diodes in a TO56 package with a free-space output power of more than 50 mW as well as broadband 488nm SLEDs with an ex-fiber output power of more than 3 mW and a 3dB bandwidth of more than 5 nm.

These devices meet highest requirements of low-noise operation, suitable for a wide range of biomedical applications such as fluorescence imaging or flow cytometry. These devices complement the already existing portfolio of GaN-based SLED devices at 405nm, 425nm, 450nm or 510nm with similar performance values.

RGB Laser Diodes

Please contact our Sales Team to get more information:


Gene W. Covell
VP of Sales
+1 215 669 4488


Kevin Hsu
Europ. Business Dev. Mgr.
+41 43 444 6584


Huang Huang
Asia Sales Manager
+86 755 8370 2421


EXALOS joins LaSAR Alliance for Augmented Reality Wearable Devices

EXALOS joins LaSAR Alliance for Augmented Reality Wearable Devices

April 20., 2022: EXALOS, the world’s leading developer of visible
Superluminescent Light Emitting Diodes (SLEDs) and highly customized semiconductor light sources, announces that it has joined the recently formed LaSAR (Laser Scanning for Augmented Reality) Alliance, an international federation of leading industry groups and consortia dedicated to the advancement of augmented reality (AR) eyewear applications.

read more