alpha300 RS Raman SNOM Microscope

Correlative Raman and scanning near-field optical microscope   

WITec alpha300 RS Raman SNOM Microscope   

Features

• Combines alpha300 R (Raman) and alpha300 S (SNOM) into one microscope
• Ideally suited for combined techniques such as near-field Raman imaging
• Moving the sample between the measurements not necessary
• Switch between the measurement techniques by rotating the objective turret
• SNOM provides high-resolution surface imaging...
• ...Raman delivers chemical imaging of the same surface

A challenging experimental requirement is no match for the alpha300 RS from WITec. Combining confocal Raman with Scanning Near-field Optical Microscopy (SNOM) for optical imaging with resolution beyond the diffraction limit, this microscope has all features of the alpha300 S and alpha300 R, plus many AFM operation modes too. It is also ideally suited for other high-resolution Raman imaging techniques such as nearfield-Raman imaging.

Topography image of exfoliated graphene simultaneously determined during the nearfield-Raman measurement with corresponding topography curve measured along the blue line, and nearfield-Raman image of the same sample area of the G-band intensity with corresponding intensity graph measured along the red line.

Raman Operation Modes

• Raman spectral imaging: acquisition of a complete Raman spectra at every image pixel
• Planar (x-y-direction) and depth scans (z-direction) with manual sample positioning
• Fibre-coupled UHTS spectrometer specifically designed for Raman and low light applications
• Image stacks: 3D confocal Raman imaging
• Time series
• Single point Raman spectrum acquisition
• Single-point depth profiling
• Confocal Fluorescence Microscopy
• Bright Field Microscopy

SNOM Operation Modes

• Scanning Near-field Optical Microscopy modes:
  • Bottom up
  • Top down
  • Collection
• Confocal Microscopy (CM) modes:
  • Transmission
  • Reflection
  • Fluorescence (optional)
  • Acquisition of force-distance curves and light-distance curves
  • Fixed-bottom illumination
  • Total internal reflection illumination (optional
  • SNOM-AFM combinations: AFM operation modes of alpha300 A optional

Microscope specification

• Research grade optical microscope with 6x objective turret
• CCD camera video system
• High sensitivity monochrome video feed of sample & SNOM/AFM tip in transmission
• LED white-light source for Köhler illumination of AFM tip and sample
• Manual sample positioning in x- and y-direction
• Fibre coupling
• Sample size: 120 mm (x- & y-axes), 25 mm in z-axis
• Active vibration isolation system

Need stability?

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