Acousto-Optic Devices Acousto-Optic Light Deflectors Type: EFLD Acousto-Optic Light Deflector deflects laser beam by using shear-mode acoustic waves travelling in a single crystal of tellurium dioxide (TeO2), whereby flat frequency response and light deflection characteristics of high diffraction efficiency are obtained with low driving power. Panasonic’s unique system is employed for this deflector, thus eliminating the need for an optic phase plate even for two dimensional deflection, and simplifying the optical system. Features ● Low driving power (0.5 to 1 W) density of resolvable spots (160 to 750 spots) ● High diffraction efficiency (over 80 %@633 nm) ● Wide deflection angle (over 2.7 °@633 nm) ● RoHS compliant ● High Recommended Applications ● Laser scanner microscope ● Electrical spectrum analyzer ● Laser Principle Light Deflectors TeO2 crystal Incident laser beam Absorber f2 f1 <110> } diffracted light 0 th diffracted light <001> Acoustic wave Transducer f1 to f2 Oscillator Explanation of Part Numbers 1 2 3 4 E F L D Product Code 5 6 7 Characteristics (Number of Resolvable Spots) 8 9 10 Design No. Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 00 Dec. 2014 Acousto-Optic Devices Ratings and Characteristics Part No. Item EFLD250 EFLD250A AO Medium EFLD250C EFLD250R TeO2 Optical Wavelength: l (nm) 633 488 to 515 442 to 458 760 to 840 250 min. 250 min. 250 min. 160 min. 5.3 5.4 5.4 4.5 3.5×3.5 3.5×3.5 3.5×3.5 3×3 Acoustic Velocity: u (m/s) 660 650 650 660 Center Frequency: f (MHz) 75 90 (l=515 nm) 100 (l=488 nm) 103 (l=458 nm) 108 (l=442 nm) 55 Deflection Bandwidth (–3 dB): Δ f (MHz) 50 min. 50 min. 50 min. 36 min. Maximum Diffraction Efficiency (%) 80 min. 80 min. 70 min. 75 min. Maximum Driving Power (W) 0.6 0.5 0.5 1.0 Deflection Angles: Δ q (deg.) 2.7 min. 2.2 min. 2.0 min. 2.5 min. Optical Transmittance (%) 94 min. 92 min. 90 min. 90 min. Number of Resolvable Spots (Spots) Access Time (μs) Maximum Beam Dimensions: H×W (mm) Input Impedance (Ω) 50 (nominal) Laser Polarization Linear (Horizontal to the base: E Vector) Part No. Item EFLD750 EFLD750A AO Medium Optical Wavelength: l (nm) Number of Resolvable Spots (Spots) Access Time (μs) EFLD750C EFLD750R TeO2 633 488 to 515 442 to 458 760 to 840 750 min. 750 min. 750 min. 540 min. 15.2 15.4 15.4 15.2 Maximum Beam Dimensions: H×W (mm) 3×10 Acoustic Velocity: u (m/s) 660 650 650 660 Center Frequency: f (MHz) 75 90 (l=515 nm) 100 (l=488 nm) 103 (l=458 nm) 108 (l=442 nm) 55 Deflection Bandwidth (–3 dB): Δ f (MHz) 50 min. 50 min. 50 min. 36 min. Maximum Diffraction Efficiency (%) 80 min. 80 min. 70 min. 75 min. Maximum Driving Power (W) 0.6 0.5 0.5 1.0 Deflection Angles: Δ q (deg.) 2.7 min. 2.2 min. 2.0 min. 2.5 min. Optical Transmittance (%) 94 min. 92 min. 90 min. 90 min. Input Impedance (Ω) Laser Polarization 50 (nominal) Linear (Horizontal to the base: E Vector) Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 00 Dec. 2014 Acousto-Optic Devices Dimensions in mm (not to scale) Type EFLD250 Type EFLD750 Aperture f6 30.4 Aperture 45 53 20.4 21 10.2 Base 32 15 Connector(SMA) 4-M2.6(ISO) Depth4 f3 Depth4 20.4 25.0±0.1 10 32 45 53 14.0±0.1 f3 Depth4 14.0±0.1 Base 21 10.2 5 30.4 connector(SMA) 4-M2.6(ISO) Depth4 25.0±0.1 10 ■ Please contact the factory for packaging methods. Diffraction Efficiency Type EFLD750 Diffraction Efficiency(%) Typical Characteristics 45 75 Frequency(MHz) 105 Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 00 Dec. 2014