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Low Noise Laser Macro Focus Generator LNC-13MMC+96CR

Low noise rotationally symmetric beam profile with extended depth of focus

The new low noise laser diode modules from Schäfter+Kirchhoff have reduced power noise, reduced coherence length and low speckle contrast as a result of internal RF-modulation. The low noise (< 0.1% RMS, @<1 MHz) and the mode-hopping free laser operation makes these laser diode modules ideal for particle measurements or advanced medical and biotechnological applications. Due to the reduced coherence length, speckle contrast might be lowered. This effect, however, becomes smaller for smaller spots.

Performance Features

  • Low noise laser module (<0.1% RMS,@<1 MHz)
  • Reduced coherence
  • Mode hopping free laser operation
  • Rotationally symmetric focus [X5]
  • Gaussian intensity profile
  • Focus Ø starting at 6 μm
  • Integrated focussing mechanism
  • Spectral range 635–830 nm
  • Laser power up to 22 mW
  • External modulation: TTL up to 100 kHz and analog up to 100 kHz
  • Output power adjustable <1 –100 %
  • Supply Voltage: 5V DC

Laser macro focus generators of type LNC-13MMC…+96CR, use CircuLaser diodes (Blue Sky Inc.) with integrated micro-optics. The micro-optics transform the elliptical radiation emitted by the laser diode into circular radiation with a deviation maximum of 1:1.2.

The integrated electronics allow external modulation. The beamshaping optics define the optimum working distance and the focussing range. The chosen laser module determines the wavelength and the output power and, thereby, the laser safety class.


Schäfter + Kirchhoff GmbH - specialists for optical sensors and measurement technology
Kieler Str. 212, D-22525 Hamburg, Tel. +49(0)40 85 39 97-0, Fax +49(0)40 85 39 97-79