Surface Magneto - Optic Kerr Effect System

The Surface Magneto-Optic Kerr Effect System (SMOKE) is a precision instrument for studying magneto-optical effects at material surfaces. It measures changes in reflected polarized light from magnetized surfaces, providing insights into magnetic properties and domain structures.

• Kerr angle: the rotation of linearly polarized light upon reflection.
• Kerr ellipticity: the ratio of semimajor to semi-minor axes of the resulting elliptically polarized light.

The system integrates Kerr effect measurements with microscopic domain imaging, achieving high stability and resolution for both research and industrial applications.

• Low-noise laser source with TTL modulation.
• High-sensitivity photodetector for accurate light-intensity signal collection.
• Lock-in amplifier for frequency-locked signal acquisition.
• Low noise, high resolution, and excellent stability.
• Integrated optical system: users only need to mount the sample and adjust the sample rod.
• Combined Kerr effect measurement and magnetic domain microscopy, with microscopic resolution of 6 µm.
• In-situ vacuum measurement capability with multiple magnetic field and cryogenic options.

• Thin films and multilayers with magneto-optical properties
• Spintronic devices for Kerr-based analysis
• Surface magnetic anisotropy studies
• Domain wall dynamics and mapping experiments

Typical applications:

• Magnetic hysteresis loop measurements (longitudinal, transverse, polar)
• Area mapping of Kerr signals across sample surfaces
• Determining magnetic easy and hard axes via 360° rotation
• Magnetoelectric coupling testing through integrated electrical interfaces

• Low-noise laser with TTL modulation
• High-sensitivity photodetector
• Lock-in amplifier
• Integrated Kerr and microscopy system
• High-speed CCD for domain imaging
• Vacuum-compatible sample chamber with electrical interface

• Real-time hysteresis loop acquisition (longitudinal, transverse, polar modes)
• Automatic background subtraction and noise correction
• Area mapping and anisotropy testing with step control
• Image capture and analysis of surface magnetic domains
• Data export in formats compatible with Excel, Origin, and other scientific software

• Cryogenic option (100 K – 300 K range)
• Variable magnetic field configurations (up to 2.2 T)
• Polarizers and additional optical filters for enhanced domain imaging

Model: Surface Magneto-Optic Kerr Effect System
Standard Components: Optical module, electromagnet, CCD microscopy system, sample stage
Optional Accessories: Cryogenic stage, variable magnetic field modules, polarizers