Alphalas Tunable Waveplates Description：

Datasheet

Unique Tunable Waveplates: Range: 150 - 7000 nm & 1 - 19 μm. Bandwidth up to 300 nm. Zero-Order!

1、Tunable True Zero-Order Waveplates with Quarter-Wave & Half-Wave Phase Retardation

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.

Applications

Polarization Measurement & Control

Laser Research

Spectroscopy

Nonlinear Optics

OPO

Femtosecond Lasers

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 ?11 mm, thickness 2.0 mm
PO-TWP-L4-25-UVIR	Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate Range 150 - 6000 nm, aperture ?24 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 ?24 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 ?11 mm, thickness 2.5 mm
PO-TWP-L2-25-UVIR	Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate Range 150 - 6000 nm , aperture ?24 mm, thickness 2.5 mm
PO-TWP-L2-12-IR	Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate Optimized for the range 2000 - 6500 nm, aperture ?11 mm, thickness 2.5 mm
PO-TWP-L2-25-IR	Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate Optimized for the range 500 - 6500 nm, aperture ?24 mm, thickness 5 mm
PO-TWP-L4-25-FIR	Tunable True Zero-Order Quarter-Wave (λ/4) Phase Retardation Plate Range 1 - 19 μm, aperture ?24 mm, thickness 5 mm
PO-TWP-L2-25-FIR	Tunable True Zero-Order Half-Wave (λ/2) Phase Retardation Plate Range 1 - 19 μm, aperture ?24 mm, thickness 5 mm
Tunable Quarter-Wave & Half-Wave Phase Retardation Plates [Detailed Datasheet, PDF]

2、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.

Applications

Polarization Measurement & Control

Laser Research

Spectroscopy

Nonlinear Optics

OPO

Femtosecond Lasers

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 ?11 mm, may replace Soleil-Babinet compensator!
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 ?24 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 ?11 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 ?24 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 ?24 mm, thickness 5 mm, may replace Soleil-Babinet compensator!
Tunable Waveplates with Freely Adjustable Phase Retardation: MULTIPHASE [Detailed Datasheet, PDF]

3、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

Frequency Tripling

Femtosecond Third Harmonic Generation

Differential Polarization Rotation

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 ?11 mm
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 ?11 mm
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 ?24 mm
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 ?24 mm
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 ?11 mm
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 ?24 mm
Tunable Dual-Wavelength True Zero-Order Phase Retardation Plates: DUAL-WAVE [Detailed Datasheet, PDF]

4、Tunable True Zero-Order Waveplates for Special Applications