Epoxy-assembled waveplate #2421

achromatic

Overview
Achromatic waveplates provide a constant phase shift independent of the wavelength used. This wavelength independence is achieved by combining two different birefringent crystalline materials so that relative retardation shifts are balanced across a broad spectral range. Their flat retardance response makes them suitable for tunable lasers, multi-line laser systems and other broadband sources.

Key Features

• Multiple wavelength ranges available
• Flat retardance over each specified spectral range
• Available as λ/4 and λ/2 retarders
• Mounted in black anodized aluminum housing with fast axis marked

Product Details

• Designed for normal incidence (0°); ±3° deviation produces less than 1% change in retardance
• 23 mm clear aperture units feature a cemented construction
• Fast axis clearly indicated on the housing for alignment

Technical specifications

• Retardance types: Quarter-wave (λ/4) and Half-wave (λ/2)
• Construction: Cemented for 23 mm clear aperture units
• Mount: Black anodized aluminum housing; fast axis marked
• Incidence tolerance: <1% change in retardance for ±3° incidence deviation (at 0° design)
• Applications: Tunable lasers, multi-line laser systems, broad-spectrum sources