Laser Mode Converters LMC25-633-11

The LBTek Laser Mode Converter (LMC) is a diffractive optical element engineered to transform fundamental TEM00 laser modes into higher-order Hermite-Gaussian modes. It utilizes optical alignment technology to create LCP films with different fast-axis distributions on the glass substrate surface.

The converter functions by precisely controlling the thickness of the LCP film so that the phase retardation between the ordinary and extraordinary light passing through the liquid crystal molecules is set to half-wave, making it a single-wavelength device.

TEM00 to TEM11 Mode Converter

This advanced configuration partitions the substrate into four regions where diagonal regions share aligned fast-axis orientations, while adjacent regions maintain perpendicular alignment with half-wave phase difference. This structure enables creation of TEM11 mode patterns from a fundamental Gaussian input beam.

Key Features

• Liquid crystal polymer / N-BK7 window material in sandwich structure with mechanical housing
• Four-zone fast axis distribution (0 deg-90 deg-0 deg-90 deg)
• Half-wave retardation for single-wavelength operation
• Transforms TEM00 modes to TEM11 Hermite-Gaussian configurations
• Available at 532 nm, 633 nm, and 780 nm