89 North

LDI-4 Laser Diode Illuminator

The LDI-4 laser diode illuminator is a user inspired version of the original LDI-7.  Many researchers were asking for a laser launch that covered only the 4 basic lines: DAPI, FITC, TRITC, Cy5.  89 North listened and we responded.  The LDI-4 has only the lines you asked for.  While we reduced the number of lines inside the box, we made no compromises on the quality and performance you’ve come to expect from 89 North.  This unit is also available with a 488nm laser for FITC/GFP and with a 577nm laser for TRITC/mCherry…or both!

In Stock

The LDI-4 is a multiline, solid-state laser illuminator offering 4 laser lines across the visible with powers up to 1W. The unit offers feedback controlled output stability and up to a 100:1 linear dynamic range.  LDI-4 gets the job done with the same great performance found in earlier models.

see technical product data sheet


High output power Shorter exposures
Faster imaging
Faster activation times in optogenetics and photoactivation experiments
Faster bleaching times in FRAP experiments
Feedback controlled optical stability Quantitative imaging, ideally suited for ratiometric imaging
More repeatable optogenetics experiments
Up to 100:1 linear dynamic range Ability to turn power down when needed and maintain stability and quantitative imaging
4 laser lines across the spectrum Covers most of the standard fluorescence probes
No user alignment Easy to use and maintain
TTL and Analog control No need for software specific drivers
  • Spinning Disk Confocal Illumination
  • Photoactivation/Photoconversion/FRAP
  • Optogenetics
  • Whole Animal Imaging

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