Laser Mode Converters LMC25-532-01

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. Successful mode conversion requires linearly polarized input light with polarization aligned parallel or perpendicular to the liquid crystal fast-axis direction.

TEM00 to TEM01/TEM10 Mode Converter

This configuration divides the N-BK7 substrate into two distinct regions with perpendicular fast axes and half-wave phase difference. The converter features uniform phase retardation across the entire clear aperture. Each unit mounts in a black anodized standard SM1 threaded sleeve with engraved markings indicating fast-axis direction.

Key Features

• Liquid crystal polymer / N-BK7 window material in sandwich structure with mechanical housing
• Two-zone fast axis distribution (0 deg and 90 deg)
• Half-wave retardation for single-wavelength operation
• Transforms TEM00 modes to TEM01/TEM10 Hermite-Gaussian configurations
• Available at 532 nm, 633 nm, 780 nm, and 1064 nm