Laser Mode Converters LMC25-532-11

Overview

The laser mode converter is built from a liquid crystal polymer (LCP) film on an N-BK7 window substrate. Photo-alignment sets the fast-axis distribution of the LCP layer and the film thickness fixes the o/e phase retardation at λ/2, making it a single-wavelength device that converts a fundamental TEM00 beam into a higher-order Hermite-Gaussian mode (TEM00→TEM11). Model LMC25-532-11 operates at 532 nm over a clear aperture of Ø21.5 mm and accepts an angle of incidence of ±15 °.

Applications

• Higher-order Hermite-Gaussian mode generation
• Structured light and beam shaping
• Optical trapping and particle manipulation
• Mode-division multiplexing experiments
• Laser resonator and beam-quality studies

Construction & Performance

• Material Liquid Crystal Polymer/N-BK7 Window Plate
• Component size Ø25.4×3.2 mm; clear aperture Ø21.5 mm
• Mode switching TEM00→TEM11; retardance λ/2 (accuracy ±λ/100)
• Transmittance >97 %@532 nm; AR coating Ravg<0.5 %@400-700 nm
• Angle of incidence ±15 °; adjacent area gap <10 μm
• Surface quality (scratch/dig) 40/20
• Mounted in a black anodised SM1-threaded sleeve with fast-axis markings

Storage & Handling

Operating temperature -20~80 °C. Handle the coated surface without contact and store in a dry environment.