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Unique Tunable Waveplates: Range: 150 - 7000 nm & 1 - 19 µm. Bandwidth up to 300 nm. Zero-Order!
 ALPHALAS Tunable Waveplates - Product Citations [PDF]
Types of Tunable Waveplates
On this page you will find information about the following types of tunable waveplates:
- Tunable Waveplates with Quarter-Wave & Half-Wave Phase Retardation
- Tunable Waveplates with Freely Adjustable Phase Retardation: MULTIPHASE
- Tunable Dual-Wavelength Waveplates: DUAL-WAVE
- Tunable Waveplates for Special Applications
Tunable True Zero-Order Waveplates with Quarter-Wave & Half-Wave Phase Retardation
A novel type of phase retardation plates (wave plates) representing a breakthrough in light polarization measurement and control is now commercially available.
The UVIR type plate can be adjusted to a quarter or half wave phase retardation for an arbitrary wavelength from 150 nm (vacuum-UV) to 6500 nm (far infrared) and the FIR type from 1 µm to 21 µm. Thus, the new plates replace tens of ordinary phase retardation plates required to cover these ultrawide spectral ranges. This is an exclusive feature and has no commercial counterpart. A combination of two optically contacted thin plates cut at a proper angle with respect to the optical axis forms a true zero-order phase retardation plate, similar in design to the Savart plate.
The required phase retardation is achieved by tilting the plate by 3° - 30°. This design is aimed at avoiding light reflection back to the laser system which in many cases results in complications.
The new phase retardation plates are indispensable in research with widely tunable or broadband laser sources like dye lasers, optical parametric generators and femtosecond lasers.
Although they have new and exclusive features and have no commercial counterpart, the tunable waveplates are offered at very competitive prices.
| Applications |
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- Polarization Measurement & Control
- Laser Research
- Spectroscopy
- Nonlinear Optics
- OPO
- Femtosecond Lasers
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Replace many conventional waveplates! Already mounted in a special tilt/rotation holder. Uncoated.
| Waveplate Model |
Waveplate Description |
| PO-TWP-L4-12-UVIR |
Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate
Range 150 - 6000 nm, aperture Ø11 mm, thickness 2.0 mm
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| PO-TWP-L4-25-UVIR |
Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate
Range 150 - 6000 nm, aperture Ø24 mm, thickness 2.0 mm |
| PO-TWP-L4-25-IR |
Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate
Range 500 - 6500 nm, aperture Ø24 mm, thickness 5.0 mm |
| PO-TWP-L2-12-UVIR |
Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate
Range 150 - 6000 nm, aperture Ø11 mm, thickness 2.5 mm |
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PO-TWP-L2-25-UVIR
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Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate
Range 150 - 6000 nm
, aperture Ø24 mm, thickness 2.5 mm |
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PO-TWP-L2-12-IR
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Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate
Optimized for the range 2000 - 6500 nm, aperture Ø11 mm, thickness 2.5 mm |
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PO-TWP-L2-25-IR
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Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate
Optimized for the range 500 - 6500 nm, aperture Ø24 mm, thickness 5 mm |
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PO-TWP-L4-25-FIR
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Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate
Range 1 - 19 µm, aperture Ø24 mm, thickness 5 mm |
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PO-TWP-L2-25-FIR
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Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate
Range 1 - 19 µm, aperture Ø24 mm, thickness 5 mm |
Tunable Quarter-Wave & Half-Wave Phase Retardation Plates [Detailed Datasheet, PDF]
Tunable True Zero-Order Waveplates with Freely Adjustable Phase Retardation: MULTIPHASE
A modification of our tunable phase retardation plate allows continuous variation of the phase retardation in the range 0° to 360°. The UVIR type plate can be adjusted to an arbitrary phase retardation in the range 150 nm - 6500 nm and the FIR type in the range from 1 µm to 21 µm . The MULTIPHASE plate successfully replaces the expensive Soleil-Babinet and other types of compensators and can be used to analyze the state of light polarization.
The required phase retardation is achieved by tilting the plates 0° - 25° using a special tilt holder. Each plate is provided with tuning curves that allow easy determination of the phase retardation.
The variable phase retardation plates are indispensable in research with widely tunable or broadband laser sources like dye lasers, optical parametric generators and femtosecond lasers.
The variable phase retardation plates are offered at very competitive prices, making them an attractive alternative to other types of phase compensators.
| Applications |
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- Polarization Measurement & Control
- Laser Research
- Spectroscopy
- Nonlinear Optics
- OPO
- Femtosecond Lasers
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Replace many conventional waveplates! Already mounted in a special tilt/rotation holder. Uncoated.
| Waveplate Model |
Waveplate Description |
| PO-TWP-MP-12-UV |
Tunable True Zero-Order Waveplate with Freely Adjustable Phase Retardation - MULTIPHASE
Retardation adjustable from 0 to λ (0 to full wave), range 150 - 2000 nm, aperture Ø11 mm, may replace Soleil-Babinet compensator!
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| PO-TWP-MP-25-UV |
Tunable True Zero-Order Waveplate with Freely Adjustable Phase Retardation - MULTIPHASE
Retardation adjustable from 0 to λ (0 to full wave), range 150 - 2000 nm, aperture Ø24 mm, may replace Soleil-Babinet compensator! |
| PO-TWP-MP-12-IR |
Tunable True Zero-Order Waveplate with Freely Adjustable Phase Retardation - MULTIPHASE
Retardation adjustable from 0 to λ (0 to full wave), range 2000 - 6500 nm, aperture Ø11 mm, may replace Soleil-Babinet compensator! |
| PO-TWP-MP-25-IR |
Tunable True Zero-Order Waveplate with Freely Adjustable Phase Retardation - MULTIPHASE
Retardation adjustable from 0 to λ (0 to full wave), range 2000 - 6500 nm, aperture Ø24 mm, thickness 5 mm, may replace Soleil-Babinet compensator! |
| PO-TWP-MP-25-UVIR |
Tunable True Zero-Order Waveplate with Freely Adjustable Phase Retardation - MULTIPHASE
Retardation adjustable from 0 to λ (0 to full wave), range 150 - 3000 nm, aperture Ø24 mm, thickness 5 mm, may replace Soleil-Babinet compensator! |
Tunable Waveplates with Freely Adjustable Phase Retardation: MULTIPHASE [Detailed Datasheet, PDF]
Tunable Dual-Wavelength True Zero-Order Phase Retardation Plates: DUAL-WAVE
The Tunable Dual-Wavelength Zero-Order Phase Retardation Plates feature true zero-order at both fundamental and second harmonic, broad bandwidth (typ. 50 nm) as well as phase retardation lambda/2 at the fundamental and lambda at the second harmonic respectively. Wavelength regions are 150 - 6000 nm (UVIR type) and 0.8 - 21 µm (FIR type).
| Applications |
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- Frequency Tripling
- Femtosecond Third Harmonic Generation
- Differential Polarization Rotation
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Replace many conventional waveplates! Already mounted in a special tilt/rotation holder. Uncoated.
| Waveplate Model |
Waveplate Description |
| PO-TWP-DW-2/1-12-UV |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for frequency tripling arrangements of CW to femtosecond lasers, retardation for fundamental: λ/2 (half-wave), for SH: λ/1 (full-wave), adjustable in the range 300 - 6000 nm (fundamental), aperture Ø11 mm
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| PO-TWP-DW-4/2-12-UVIR |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for polarization control of CW to femtosecond lasers, retardation for fundamental: λ/4 (quarter-wave), for SH: λ/2 (half-wave), adjustable in the range 150 - 6000 nm, aperture Ø11 mm
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| PO-TWP-DW-2/1-25-UV |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for frequency tripling arrangements of CW to femtosecond lasers, retardation for fundamental: λ/2 (half-wave), for SH: λ/1 (full-wave), adjustable in the range 150 - 3000 nm, aperture Ø24 mm
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| PO-TWP-DW-4/2-25-UVIR |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for polarization control of CW to femtosecond lasers, retardation for fundamental: λ/4 (quarter-wave), for SH: λ/2 (half-wave), adjustable in the range 150 - 6000 nm, aperture Ø24 mm
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| PO-TWP-DW-2/1-12-IR |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for frequency tripling arrangements of CW to femtosecond lasers, retardation for fundamental: λ/2 (half-wave), for SH: λ/1 (full-wave), adjustable in the range 2000 - 6500 nm, aperture Ø11 mm
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| PO-TWP-DW-2/1-25-IR |
Tunable True Zero-Order DUAL-WAVELENGTH Phase Retardation Plate - DUAL-WAVE
Best for frequency trippling arrangements of CW to femtosecond lasers, retardation for fundamental: λ/2 (half-wave), for SH: λ/1 (full-wave), adjustable in the range 2000 - 6500 nm, aperture Ø24 mm
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Tunable Dual-Wavelength True Zero-Order Phase Retardation Plates: DUAL-WAVE [Detailed Datasheet, PDF]
Tunable True Zero-Order Waveplates for Special Applications
Already mounted in a special tilt/rotation holder. These waveplates are coated.
| Waveplate Model |
Waveplate Description |
| PO-ZWP-L4-800-12-AR |
True Zero-Order λ/4 Wave Plate, specially developed for fs-Ti:Sapphire
Thickness 2 mm, AR/AR 400-820 nm, aperture Ø11 mm
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| PO-ZWP-L2-800-12-AR |
True Zero-Order λ/2 Wave Plate, specially developed for fs-Ti:Sapphire
Thickness 2 mm, AR/AR 400-820 nm, aperture Ø11 mm
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| PO-ZWP-L4-800-25-AR |
True Zero-Order λ/4 Wave Plate, specially developed for fs-Ti:Sapphire
Thickness 2 mm, AR/AR 400-820 nm, aperture Ø24 mm
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| PO-ZWP-L2-800-25-AR |
True Zero-Order λ/2 Wave Plate, specially developed for fs-Ti:Sapphire
Thickness 2 mm, AR/AR 400-820 nm, aperture Ø24 mm
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| PO-ZWP-L4-1064-16-AR |
True Zero-Order λ/4 Wave Plate, suitable for Nd:YAG, Nd:YLF, Nd:Glass picosecond and femtosecond lasers
MgF2, tunable AR/AR@1064, aperture Ø16 mm
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| PO-ZWP-L2-1064-16-AR |
True Zero-Order λ/2 Wave Plate, suitable for Nd:YAG, Nd:YLF, Nd:Glass picosecond and femtosecond lasers
MgF2, tunable AR/AR@1064, aperture Ø16 mm
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