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LD irradiation light source (SPOLD)



The SPOLD is a laser irradiation light source integrating a fiber output LD module and its driver and a Peltier cooler into a compact unit. Selectable irradiation unit enables laser irradiation with specific right condensed light spot diameter and beam profile.

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  • Lightweight & compact
    Integrates the LD, drive circuit, and cooling mechanism
  • Air cooling
    Easy handling with peltier (thermoelectric) cooling
  • External control available
    Various kinds of alarm output available
  • Various types of irradiation units provided
    Focus/colimating optics, uniform irradiation etc.


  • Soldering
  • Plastic welding
  • Glass sealing
  • Adhesive thermal curing
  • Infrared illumination, etc.


  Model no. L13920-411 L13920-421 L13920-511 L13920-521
LD irradiationlight source
main unit
Oscillation mode CW
Output end of irradiation unit
(with maximum current setting)
27 W (min.) 67.5 W (min.) 54 W (min.)
Peak oscillation wavelength (25 ℃) 940 nm±20 nm 808 nm±20 nm 940 nm±20 nm 808 nm±20 nm
Cooling method Air cooling
(W × H × D)
Approx. 360 mm × 150 mm × 360 mm (excluding projecting parts)
Weight Approx. 15 kg
Laser transmitting optical fiber Model no. A11612 series
Fiber length *1) Approx. 5 m
Irradiation unit Model no. A12803 series
Light condensing diameter *1) φ0.4 mm to φ6.4 mm
(Depends on fiber core diameter and condensing magnificatio)

*1) You can choose a suitable laser transmitting optical fiber and an irradiation unit to match your application. Please consult us for details.

Irradiation unit

Irradiation unit A12803 series


*Various types of different magnification and size are available.
Please contact us for details.

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