Affa-1064 – 1064 nm NIR Raman Spectrometer

Designed and assembled in Europe
Engineered by physicists
Dedicated technical support

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Fluorescence-Suppressed Raman Spectroscopy for Challenging Samples

Affa-1064 is a research-grade 1064 nm near-infrared Raman spectrometer engineered for fluorescence-suppressed molecular analysis in advanced laboratory environments.

Operating at 1064 nm excitation, the system is specifically optimized for samples that exhibit strong fluorescence under visible or 785 nm excitation. By significantly reducing fluorescence background, the Affa-1064 enables reliable Raman peak detection in complex organic and biological matrices.

Combining stabilized high-power NIR excitation, a thermoelectrically cooled CCD detector, and a precision F/4 crossed Czerny–Turner optical architecture, the system delivers stable and reproducible Raman measurements for demanding research applications.

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Why 1064 nm Excitation?

Fluorescence is one of the major limitations in Raman spectroscopy.
Near-infrared 1064 nm excitation dramatically reduces fluorescence emission in many materials, allowing clearer spectral interpretation.

This is particularly critical for:

• Biological samples and biomolecules
• Organic and polymeric materials
• Pigmented compounds and dyes
• Carbon-based and composite materials
• Cultural heritage and artworks

Compared to shorter excitation wavelengths, 1064 nm minimizes fluorescence background, improves baseline stability, and enables more reliable identification of weak Raman features.

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Advanced Detector and Thermal Control

The Affa-1064 integrates a thermoelectrically cooled CCD detector optimized for low-noise Raman acquisition.

Key detector characteristics:

• TE-cooled CCD (down to approximately −5 °C)
• High dynamic range (~10,000:1)
• Ultra-low noise electronics
• Stable long integration capability
• Effective pixel configuration optimized for NIR detection

Active cooling reduces dark current and thermal noise, enabling extended acquisition times and improved weak-signal detection.

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Optical Architecture

The spectrometer core is based on a precision F/4 crossed Czerny–Turner configuration with a 112 mm focal length for both incidence and output paths.

This architecture provides:

• High optical throughput
• Reduced stray light
• Stable spectral alignment
• Consistent peak definition

Available spectral ranges:

• 200 – 2700 cm⁻¹
• 200 – 3500 cm⁻¹
• 200 – 4300 cm⁻¹

Typical spectral resolution: 6–10 cm⁻¹ (configuration dependent).

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Laser Stability and Excitation Performance

The Affa-1064 integrates a stabilized NIR excitation module designed for quantitative and reproducible Raman measurements.

• Narrow linewidth (~0.1 nm)
• Adjustable output power (up to high-power configuration, ~500 mW)
• Power stability σ/μ < ±0.2%
• Long-term spectral stability σ/μ < 0.5% (8 hours continuous operation)

Stable excitation is essential for comparative analysis, spectral reproducibility, and long-term measurement reliability.

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System Stability and Environmental Reliability

The Affa-1064 is engineered for stable operation across standard laboratory environments.

• Spectral shift ≤ 1 cm⁻¹ (10–40 °C)
• Spectral range variation < ±5% (5–40 °C)
• Operating temperature: −10 to 40 °C
• Operating humidity: < 95%

These characteristics ensure reproducible measurements in both controlled laboratory and applied analytical environments.

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Modular Fiber-Coupled Probe

The system features a detachable fiber-coupled Raman probe allowing flexible measurement configurations.

• Numerical aperture (NA) ≈ 0.3
• Rayleigh scatter rejection OD > 8
• Working distance ~6 mm
• Compact optical aperture

The modular design enables integration with laboratory accessories, sample holders, and optical positioning systems.

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Spectral Analysis Software

Affa-1064 includes PC-based spectral analysis software supporting advanced data processing and substance identification.

Core functions include:

• Integration time control (1 ms – 60 s)
• Peak search and peak labeling
• Baseline correction
• Spectral smoothing
• Spectral library import
• Custom database creation
• Substance identification algorithms

The interface supports both research specialists and technical operators.

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Integration and Compatibility

The Affa-1064 integrates seamlessly with:

• Raman probes
• Fiber-coupled spectroscopy accessories
• Laboratory sample holders
• Optical calibration standards

Fully compatible with Thunder Optics spectroscopy solutions.

Applications

The Affa-1064 is particularly suited for fluorescence-challenged materials and NIR Raman analysis in:

Nanomaterials and Advanced Materials

Carbon materials, composites, functional coatings

Biological Sciences

Fluorescence-active biochemical samples

Forensic Identification

Trace evidence and unknown compound analysis

Pharmaceutical Engineering

Active ingredient verification and polymorphism studies

Agriculture and Food Analysis

Organic compound characterization and contamination detection

Gemstone and Mineral Identification

Inorganic and semi-precious material analysis

Environmental Science

Pollutant and material characterization

Performance Highlights

• 1064 nm NIR excitation
• TE-cooled CCD detector
• SNR > 3000:1
• F/4 crossed Czerny–Turner optical design
• High spectral and thermal stability
• Modular fiber-probe integration