Achromatic waveplates
465-650 nm | 650-1100 | 1000-1750 nm | >0.3 J/cm2
An achromatic waveplate is analogous to an achromatic lens. It consists of two different birefringent materials that compensate for chromatic dispersion. The plates are oriented such that their fast axes create a half-wave or quarter-wave delay over a broad wavelength range. One common achromatic waveplate combination involves crystalline quartz and magnesium fluoride plates in an air-spaced design. Due to their excellent performance across a wide wavelength range, they are particularly useful for tunable laser sources and broad-spectrum applications.
3photon offers two types of achromatic waveplates:
- Optical contact design
- Air-spaced design
- Advantages
- Disadvantages
- Standard features
- Capable of operating across a broad spectrum of wavelengths with a single waveplate
- Saves space by replacing multiple low-order waveplates, each limited to a single wavelength, with one achromatic waveplate
- Relatively low damage threshold of 10 MW/cm² in continuous-wave laser regimes
- Limited acceptance angle
3photon provides crystalline quartz/magnesium fluoride achromatic waveplates with the following features:
- Broadband wavelength coverage: visible spectrum (465–650 nm), near-infrared (650–1100 nm), and infrared (1000–1750 nm). Custom wavelength ranges are available upon request.
- Diameters up to Ø30 mm, with mounting options
- Standard transmitted wavefront distortion (TWFD) of λ/8 at 632.8 nm
- Parallelism of <1 arcsecond
- Anti-reflective coating: Ravg < 0.8% (better values available for narrower wavelength ranges)
- LIDT of 0.3 J/cm² at 1064 nm, 10 Hz, 10 ns for both air-spaced and optically contacted waveplate designs
Have questions ?
Call us +370 618 35333, email us sales@3photon.com or fill contact form and we will contact You!