FeaturesLow noise laser spot with circular beam profile, and extended depth of focus.
- Spot diameter starting at 20 µm
- Wavelengths 405 - 940 nm
- Laser powers up to 33 mW
- Low noise Laser Module (typ. < 0.15 % of Po (RMS, Bandwidth < 1 MHz))
Low Noise Laser Macro Focus Generator
The laser diode beam source series LNC-13MM produce a circular laser spot with extended depth of focus. The beam profile is approx. Gaussian. More precisely it has an elliptical intensity distribution clipped by a circular aperture.
The 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 lines and spots. (* Po is the maximum specified output power.)
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.
The working distance can be adjusted by adjusting the focus setting. Please note that the spot diameter increases proportionally to the working distance.
A fine-adjustment of the distance between laser and target is recommended for fine-focusing.
These high quality lasers can e.g. be used for machine vision applications.
Low noise Laser Modules vs. regular Laser Modules
What does Micro or Macro Laser mean?
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.
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 (TTL only for electronics type B) or manually using the potentiometer.
Using the potentiometer you set the maximum output power of the laser. Turn the potentiometer clockwise for more power and anti-clockwise for lower power.
For all lasers with analog modulation input: The input for analog modulation allows applying an analog voltage Uanalog, which allows a linear control of the laser output power from approximately zero up to the maximum power given by the potentiometer setting.
Please refer to the manual for more details.
No, you are not allowed to take off the attachment optics. If you do so you can severely damage the laser as well as hurt yourself and others around you.
Each modification of the laser needs to be discussed with Schäfter+Kirchhoff first and is not to be done by the customer.
Often higher power lasers can be equipped with internal optical filters to reduce the laser power, which in consequence may mean a smaller laser class.
This option has the advantage, that you can still set the laser power using the potentiometer and - if the laser has an analog modulation input- use the full range of the analog modulation input for setting the laser power.
Please note, that reducing the laser power by potentiometer or analog modulation input so that it operates close to the laser threshhold negatively affects laser features like pointing stability, line width/spot size or state of polarization.
Please contact Schäfter+Kirchhoff for lasers with reduced laser power.