Series 25CM and 55CM/55CR
Laser Diode Collimators transform the divergent light of a laser diode into a collimated beam, while maintaining the Gaussian intensity distribution and the intensity profile of the laser diode. They differ in max. diameter of the collimated beam and in their outer diameter (Ø 12 mm for series 25CM and Ø 25 mm for series 55CM/55CR ).
25CM vs. 55CM
The Laser Diode Collimators all have a Gaussian intensity profile. The 25CM and 55CM/55CR produce elliptical collimated beams with Gaussian beam profile. The maximum beam diameter available is smallest for the series 25CM.
Electronics
The laser has integrated electronics for control of the laser output power. The output power can be controlled using the modulation input ports (TTL and analog) or manually using the potentiometer. Optionally the lasers can be equipped with RS232 serial interface for laser control and data read-out. Please note that the electronic features are different for the compact series 25CM.
Adjustment of collimation settings
The collimation can be adjusted by using a hex key for series 55CM/55CR and an eccentric key for series 25CM. Please note that this affects beam parameters like collimated beam diameter and beam divergence.
Optional: Low Noise Version
The laser series 55CM/55CR are also available as a Low Noise version LNC-56CM/LNC-56CR. These lasers are low noise (typ. < 0.15 % of Po* (RMS, Bandwidth < 1 MHz)) and operate mode-hopping free. Due to the reduced coherence length the speckle contrast is lowered. However this effect is smaller for smaller beam diameters. (* Po is the maximum specified output power.)
These high quality lasers can e.g. be used for machine vision applications.
Features of Laser Modules with RS232 interface
Low noise Laser Modules vs. regular Laser Modules
Detailed electronic features for all electronics types
Overview over all Electronics Types
Electronic features for electronics type C
Electronic features for electronics type P
Electronic features for electronics type H
Electronic features for electronics type HP
Electronic features for electronics type CS
Electronic features for electronics type PS
Electronic features for electronics type S
Electronic features for electronics type B
Line geometry, intensity distribution, definition of line length and working distance, definition of line width and machine vision applications.
Fan angle vs. semi-telecentric.
Gaussian intensity distribution and uniform intensity distribution along the laser line
Line length and working distance definition
Line width definition
When do they appear and how to prevent them
What wavelengths are available for diode based laser modules?
Straight and angled cable exit
Laser triangulation, laser light sectioning, particle measurement etc.
Laser diode based laser sources for high precision measurement and inspection systems
