UltraFast Innovations

KAUAI — Vis-NIR Achromatic Phase Retarder / Quarter Waveplate (Negligible Dispersion)

Name: KAUAI — Vis-NIR Achromatic Phase Retarder / Quarter Waveplate (Negligible Dispersion)
Brand: UltraFast Innovations
Availability: InStock

Contact for pricing

Contact Sales

Design Tools

Time-Bandwidth Product Check if your pulse is transform-limited Pulse Stretching & Compression Calculate GVD, TOD, and pulse broadening

View all 49 calculators →

RoHS REACH

KAUAI is the perfect quarter waveplate for cutting-edge ultrafast applications. With its negligible dispersion across the visible–NIR range, KAUAI enables broadband polarization control without distorting the temporal profile of femtosecond pulses.

The retarder uses a reflective geometry that achieves a quarter-wave phase offset between s- and p-polarization components with virtually no added group-delay dispersion — making it ideal for few-cycle pulse experiments, time-resolved ellipsometry, magneto-optical Kerr effect (MOKE) measurements, and polarization-resolved spectroscopy.

Key Product Features

Negligible group-delay dispersion across full operating band
Visible–NIR achromatic operation
Quarter-wave phase shift between s and p polarization
Reflective design — no nonlinear bulk-material distortion
Compact form factor
Suitable for few-cycle pulse experiments
Customizable wavelength range upon request

Applications

Ultrafast polarization-resolved spectroscopy
Magneto-optical Kerr effect (MOKE) experiments
Time-resolved ellipsometry
Femtosecond circular-dichroism measurements

Developed at the Max-Planck-Institute of Quantum Optics. UFI is a spin-off from LMU Munich and the Max Planck Society.

Models	KAUAI
Operation	Vis-NIR achromatic quarter waveplate
Spectral range	Customizable across visible to NIR
Group-delay dispersion	Negligible
Phase retardation	Quarter-wave (90° between s/p)
Geometry	Reflective (multi-bounce design)
Applications	Few-cycle pulses, MOKE, time-resolved spectroscopy

Specific spectral range and form factor tailored per application — contact UFI for custom configurations.

Source: UltraFast Innovations manufacturer datasheet. Download the brochure (PDF) from the Documents tab for full details.

Specification Sheet PDF — Download

No CAD drawings available for this product.

Product Family: Lightsource (50 variants)

Product ▴▾	Size ▴▾	Clear Aperture ▴▾	Operating Wavelength ▴▾
CALDERA — Enhancement Cavity (CW and Multi-kW Pulsed; Tailored to Your Setup)	—	—	—	Contact
CAPELLA — Light-Field Synthesizer (Sub-fs Super-Octave Pulse Control)	—	—	—	Contact
KAUAI — Vis-NIR Achromatic Phase Retarder / Quarter Waveplate (Negligible Dispersion) Current	—	—	—
NEPAL — Coherent Ultrabroadband XUV/Soft X-ray Light Source (HHG)	—	—	—	Contact
K2 — XUV / IR Pulse Delay Unit (Customizable Double-Mirror)	—	—	—	Contact
EVEREST — Soft X-ray / XUV / VUV Spectrometer (1-200 nm, 6-1240 eV)	—	—	—	Contact
AURORA — XUV Phase Retarder / Quarter Waveplate (10-85 eV)	—	—	—	Contact
GLACIER®-123 — 1064 nm Harmonics Reflectometer & Loss Meter	—	—	—	Contact
GLACIER®-C — Supercontinuum Cavity-Ringdown Reflectometer (Broadband Loss Metrology)	—	—	—	Contact
GLACIER® — Cavity-Ringdown Reflectometer & Loss Meter (CW Laser Sources)	—	—	—	Contact
TUNDRA® — Ultra-High Contrast Third-Order Autocorrelator (up to 10¹⁴ Dynamic Range)	—	—	—	Contact
KILIMANJARO — Multipass Cell Pulse Compressor	—	—	—	Contact
SAVANNA-HP — High-Power Stretched Flexible Hollow-Core Fiber Compressor (up to 400 GW, 100 W+)	—	—	—	Contact
SAVANNA — Hollow-Core Fiber Pulse Compressor (Ultra-broadband, 5-6× Compression)	—	—	—	Contact
GOBI-IR — White Light Interferometer for GDD (IR, 900–2400 nm)	—	—	—	Contact
GOBI⁺ — White Light Interferometer for GDD (UV/VIS/NIR, 250–1060 nm)	—	—	—	Contact
GOBI — White Light Interferometer for GDD (VIS/NIR, 400–1060 nm)	—	—	—	Contact
ICE — Spatio-Temporal Characterization of Ultrafast Pulses	—	—	—	Contact
CEP-Tag — Carrier-Envelope Phase Measurement & Tagging (100 kHz+)	—	—	—	Contact
D-Vision — Single-Sensor VIS-SWIR Spectrometer (500-1700 nm)	—	—	—	Contact
B-Shot — Single-Shot Ultrafast Pulse Temporal Measurement	—	—	—	Contact
D-Max — High-Performance Ultrafast Pulse Temporal Measurement	—	—	—	Contact
D-Scan — Inline Ultrafast Pulse Measurement & Compression	—	—	—	Contact
Vlite-1000 — High-Energy Dual-Pulse Laser System	—	—	—	Contact
Melar — Customized High energy Nd: glass pulsed laser	—	—	—	Contact
Vlite Plus — High repetition rate&high energy Burst mode Nd:YAG solid-state laser	—	—	—	Contact
Opolite — OPO Tunable Pulse Laser	—	—	—	Contact
Alex&YAG-LP — Dual-Wavelength Long-Pulse Laser	—	—	—	Contact
YAG-LP-80 — Single-Wavelength Long-Pulse Laser	—	—	—	Contact
Mianna-Q — Q-switched Nd:YAG Laser	—	—	—	Contact
Alex-Q — Q-switched Alexandrite Laser	—	—	—	Contact
Nimma-LVI — Nanosecond Pulse Laser	—	—	—	Contact
Vlite-Hi-527 — Nd:YLF High-Frequency Dual-Pulse Green PIV Laser	—	—	—	Contact
Vlite-Hi-100 — Medium Repetition Rate Dual-Pulse PIV Laser	—	—	—	Contact
Tolar-527 — Diode pumped Nd: YLF High Frequency Green Laser	—	—	—	Contact
Tolar-532 — Diode pumped Nd:YAG High Frequency Green Laser	—	—	—	Contact
Lapa-M — Air-cooled Nd:YAG Q-switched DPSS laser	—	—	—	Contact
Locmar — Diode-pumped short-pulse passively Q-switched solid-state laser	—	—	—	Contact
Gama — GAMA high repetition pulsed laser delivers 60–1000 mJ pulse energy, selectable 100–500 Hz repetition rates and up to 100 W average power — ideal for LiDAR, OPO pump, PIV.	—	—	—	Contact
Opolite — OPO Tunable Pulsed Laser	—	—	—	Contact
Peak-Q-Pro — Scientific Picosecond Pulse Laser	—	—	—	Contact
Alex & YAG-LP — Long-Pulse Laser	—	—	—	Contact
YAG-LP-80 — Long-Pulse Laser	—	—	—	Contact
Vlite-1000 — High-Energy Dual-Pulse Laser System	—	—	—	Contact
Vlite — Dual pulse PIV laser	—	—	—	Contact
SGR-Extra — High-Energy Nd: YAG Q-Switched Pulsed Laser	—	—	—	Contact
SGR — High-Energy Q-Switched Nd:YAG Pulsed Laser	—	—	—	Contact
Lapa — Air-Cooled EO Q-Switched Laser	—	—	—	Contact
Nimma-HG-Pro — Advanced Lamp-Pumped Pulsed Solid-State Laser	—	—	—	Contact
Nimma-L — Intelligent UV Pulsed Laser	—	—	—	Contact