Acousto-Optic Frequency Shifter I-FS040-1.5S2C-3-GH83
I-FS040-1.5S2C-3-GH83 suits applications at 532 nm, 40 MHz operating frequency, and 2 × 6 mm effective aperture. It requires low RF drive power, approximately 100 mW at 40 MHz, and offers high diffraction efficiency for precise beam modulation and frequency control. It is particularly suitable for heterodyne interferometry, especially laser Doppler velocimetry (LDV), and supports integration for dual-channel (double-pass) optical configurations. Integrated RF drive and reference-frequency output modules are optimized for high extinction ratios between operating modes, improving signal quality and measurement accuracy. Order code: I-FS040-1.5S2C-3-GH83. Description: 40 MHz frequency shifter, 1.5 mm clear aperture, shear-wave mode, TeO₂ material, 532 nm operating wavelength, SMA male RF connector, GH83 housing.
Overview
Specifications
| Parameter | Value |
|---|---|
| Acousto-optic Medium | TeO₂ |
| Wavelengths | 532 nm |
| Operating Frequency | 40 MHz |
| Single-Surface Reflectance | ≤ 0.2 % |
| Minimum Optical Aperture [Horizontal and vertical] | 4 x 2.0 mm (horizontal and vertical) |
| Clear Aperture Dimension | 1.5 mm( Vertical ) |
| Transmittance | > 95% @ 532 nm |
| Maximum Diffraction Efficiency | > 95% @ 532 nm |
| Incident Light Polarization | Linearly polarized, horizontal relative to the housing |
| First-Order Diffracted Light Polarization | Linearly polarized, orthogonal to the incident and zero-order light |
| Polarization Extinction Ratio between Zeroth- and First-Order Light | 100:1 |
| Output Optical Configuration | The diffracted and undiffracted (zero-order) beams are symmetrically distributed on opposite sides of the straight-through optical axis, with deflection angles of ±0.5° relative to the straight-through direction. |
| Beam Separation Angle | 2° (zeroth-order to first-order diffracted light) |
| RF Drive Power | ≤ 80 mW |
| Input Impedance | 50 Ω |
| RF Connector | SMA panel-mount connector |
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