We destroyed hundreds of laser diodes --
so you don't have to!



Click for larger versionThis is a picture of laser diodes that were destroyed during our ESD testing. This picture is real, not photoshopped.

The information presented on this web site comes as the result of real ESD testing on real laser diodes. During our research, we purchased dozens of laser diode drivers and laser heads, from some of the best-known companies as well as the least-known companies. We tested many different schemes for protecting a laser diode from ESD, and you will find a list of the most common protection techniques shown on this web site, along with reasons why they generally donít work.

Why other schemes donít work

So if the most common protection schemes simply donít work, why are they being used? It is our belief that engineers have designed those protection schemes into products simply using their own intuition, or simply out of observation that everyone else does it a certain way, and therefore that way must work.

The problem with this approach is that ESD presents unique challenges that transcend intuition. And the monkey-see, monkey-do approach is clearly ineffective against ESD. Also, most engineers do not have the specialized equipment or knowledge needed to do ESD testing to see if the techniques are effective or not. Unlike oscilloscopes and volt meters, ESD testing equipment is extremely expensive, and this equipment is only made by a few companies in the entire world.

Why we are confident in our results

Fortunately, at Pangolin, we have two separate ESD discharge guns, two separate semiconductor curve tracers, a 10 GigaSample digital oscilloscope, and a lot of other specialized equipment necessary to perform ESD testing. Therefore having performed these ESD tests using this equipment, we are confident in the results presented on this web site.

We have also tested all kinds of laser diodes -- everything from very low power 5mW can-type laser diodes, to high-power infrared bars. Although all laser diodes are susceptible to ESD to some extent, low power laser diodes are particularly susceptible to ESD. Therefore, since the LASORB device will protect a low power laser diode from ESD, it protects all laser diodes from ESD.



LASORB division of Pangolin Laser Systems
9501 Satellite Boulevard, Suite 109, Orlando, FL 32837
(407) 299-2088, fax (407) 299-6066
  = contact@lasorb.com




     Background information about laser diodes
     Laser diode damage mechanisms
     Why we destroyed hundreds of laser diodes -- so you don't have to!

     More info on ESD
          Relevant books and links
     Evaluating ESD using a Human Body Model
     A quick quiz on ESD and laser diodes


       Introduction: Common ESD protection approaches
           Simple resistor
           Simple capacitor
           Schottky diode
           Zener diode
           Switch, relay and MOSFET
           Multi-layer varistor

  The LASORB component


      LASORB overview
      LASORB datasheets
      Pricing and ordering information
      Videos: Seeing is believing
      Products protected by LASORB
      LASORB in the news


      About Pangolin
      Contact information