L11799 H2D2 light source unit with high-brightness deuterium lamp. Fan-cooled. 160-400 nm.



The H2D2 light source uses a 110 W high-brightness deuterium lamp offering six times the intensity of a conventional Hamamatsu L2D2 lamp. Despite the high intensity, the L11799 is extremely stable, has a long operational lifetime and, thanks to the special housing, is cooled by the integrated fan, thus making the system easier to use than water-cooled lamps.


Delivery scope:

  • Type L12099 high-brightness deuterium lamp
  • Power supply unit
  • Power cable
  • Connection cable from power supply unit to light source
  • NOT INCLUDED - vacuum flange. This must be purchased separately, for example the E3444


  • High intensity
  • Extremely stable
  • Long service life - guaranty 1000 h
  • Integrated cooling fan - water-cooling unnecessary
  • External control
  • Replaceable lamp


  • Wavelength range: 160 to 400 nm
  • Window material: synthetic silica 
  • Aperture size: 0.6 mm
  • Cooling method: fan
  • Warm-up time: 30 s
  • Stability at 230 nm: fluctuation 0.5 %p-p (max.), drift ±0.3 %h (max.)
  • Guaranteed service life: 1000 h - the service life is defined as the time at which the intensity at 230 nm falls below 50% of its initial value
  • Input voltage (AC): 100 to 240 V, single phase, 50 to 60 Hz
  • Power consumption: 200 VA (max.)

Application examples:

  • Semiconductor inspection
  • Film thickness measurements
  • Electrostatic removal
  • Spectrophotometry
  • Environmental analysis measurements
  • Optical component inspection


Pictures shown are for illustration purposes only and may vary from the actual product in shape, colour and design
Product no.:L11799
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E3444 vacuum flange for L11798/-01 and L11799/-01 H2D2 light sources
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Browse this category: High-power and VUV light sources