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 Laser diodes 
Laser diode arrays and units – specially developed for shearography by isi-sys –  are one of the system key products. The isi-LD688 series for pulse (see trigger-system) and –cw illumination is driven in mono-mode with 50mW.
Wavelength selected array of 1-4, 6, 8 laser diode can be series connected to one driver unit. Visibility of the wavelength (688nm) is advantageous in adjustment and laser safety requirements (classification 2M or 3B).
   

Example: isi- sys LD688-4-p-e

Output: 4x 50mW = 200mW
monomode selected (685nm- 688nm)

Operation modes:  switch for cw and puls
Operation range:    0 - 30. 000Hz (Tested)

Input:  Sync. signal (TTL, opto-coupled,
             BNC) power supply 12V, GND
   isi-sys offers different housings and adjustment mounts . Customised set-ups are in use for individual application in industry and research.

Ask for OEM developments and modifications.