Harmonic separators with high transmission are dichroic beamsplitters that reflect one wavelength and transmit the other. The main advantages of a UV harmonic separator are high transmission T>98%@515 nm + T>99%@1030 nm and high LIDT (Laser Induced Damaged Threshold) at reflected 343 nm p-polarized wavelength >0.3 J/cm² at 200 fs, 100 Hz or >0.7 J/cm² at 10 ps, 50 kHz. The rear surface of harmonic separators is antireflection coated to minimize back reflections.

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High Energy Polarizing Cube Beamsplitters are optically contacted for high-power laser applications. Cubes feature high LIDT >15 J/cm² at 10 ns pulses, 1064 nm, precision surface quality, and a high extinction ratio. We provide cubes of up to 25.4x25.4 mm for a single or dual-wavelength operation. The curve below shows transmission for two 515+1030 nm wavelengths with a p-polarized component and an s-polarized component.