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Description

Dual Wavelength Raman Probes for Laboratory and Process Spectroscopy

Our dual wavelength Raman probes are engineered for high-performance Raman spectroscopy measurements in laboratory, industrial, and process monitoring environments. Designed to support multiple Raman excitation wavelengths within a single probe assembly, these probes enable flexible sample analysis while maintaining exceptional optical throughput, measurement stability, and spectral accuracy.

The innovative colinear optical design combines two Raman excitation paths into one compact probe, allowing both laser beams to focus on the same sample spot. This configuration enables efficient multi-wavelength Raman interrogation and simplifies spectral comparison across different excitation wavelengths. Available laser combinations support a broad range of Raman spectroscopy applications, including pharmaceutical analysis, biotechnology, chemical identification, semiconductor characterization, materials science, and process analytical technology (PAT).

Constructed with a durable hard anodized aluminum housing and stainless-steel components, the probes are designed for demanding laboratory and industrial environments. Optional high-temperature and high-pressure configurations support challenging inline and process Raman measurements.

The removable focusing lens barrel and customizable optical fiber configurations provide excellent flexibility for integration with a wide variety of Raman spectrometers and OEM analytical systems. High-throughput optics combined with a backscattering collection design maximize Raman signal collection efficiency for improved sensitivity and repeatability.

Advanced optical filtering technologies further enhance probe performance. Narrow bandwidth bandpass filters reduce unwanted background signals, while high Rayleigh rejection long-pass edge filters effectively suppress laser line transmission into the collection fiber, improving spectral clarity and signal-to-noise performance.

Dual Wavelength Raman Probe for Laboratory and Process Measurements

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Specifications

Transmission: 0.535 – 1.144 um
Temperature Range: 0 – 85 C
Part Number: ORP-DW-532-785
Excitation Wavelength: 532/785 nm
Spectral Range: 100-4000 cm-1
Spot Size At The Sample: ~100 microns
Focal Length: 9 mm standard (12,15, & 18 mm optional)
Probe Body Dimensions: 1.5” diameter x 3.8” length
Probe Body Material: Hard anodized aluminum
Probe Shaft Dimensions: 3/8” diameter x 6” length
Probe Shaft Material: 316 stainless steel
Filter Efficiency: OD > 6 at laser wavelength
Operating Temperature: 0-85 ⁰C (non-immersion shaft), 0-325 ⁰C (sealed shaft)
Maximum Operating Pressure: 15 psi (non-immersion shaft), 6000 psi (sealed shaft)
Fiber Configuration: 100/200 µm core standard
Fiber Optic Cable: 3 m reinforced stainless steel armor cable standard
Coupling System: Laser (FC), Spectrometer (SMA)

Got questions about specs? Use the inquiry form to ask.

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Features

  • Dual Wavelength Raman Measurement: Unique Raman probe capable of measuring at two different Raman spectral regions, allowing interrogation of the same sample area with two different lasers.
  • Versatile Sample Compatibility: Suitable for Raman measurements of all types of samples, including those in glass and plastic containers.
  • Durable Construction: Probe body encased in hard anodized aluminum housing for enhanced durability.
  • Removable Components: Features a removable focusing lens barrel and optical fibers, providing flexibility to use the proper fiber core optimized for specific Raman instruments.
  • High Throughput Optics: Incorporates high throughput optics and a backscattering probe optical design for efficient Raman measurements.
  • Advanced Filtering: Utilizes a narrow bandwidth bandpass filter to eliminate unwanted silica background and a high Rayleigh rejection long-pass edge blocking filter (optical density > 10-6) to prevent laser line transmission into the collection optical fiber.
  • Multiple Laser Combinations: Available with 532/785 nm laser combinations for diverse applications.
  • Customizable Fiber Configuration: Standard 100/200 µm core with custom optical fiber cores available to suit specific needs.
  • Robust Fiber Optic Cable: Comes with a 3 m reinforced stainless steel armor cable, with custom lengths available.
  • Wide Operating Range: Operates efficiently in temperatures from 0-85 ⁰C (non-immersion shaft) and 0-325 ⁰C (sealed shaft), with a maximum operating pressure of 15 psi (non-immersion shaft) and 6000 psi (sealed shaft).
  • Compact Design: Probe body dimensions are 1.5” diameter x 3.8” length, with a probe shaft of 3/8” diameter x 6” length, made from 316 stainless steel or other metals like Hastelloy and Inconel.

Applications

  • Routine Laboratory or Process Measurement: Ideal for routine laboratory or process measurement applications at two different Raman spectral regions.
  • Dual Laser Interrogation: Interrogation of the same sample area with two different lasers.
  • Versatile Sample Measurement: Suitable for Raman measurements of all types of samples, including through glass and plastic containers.
  • Durable Construction: Probe body is encased in a hard anodized aluminum housing.
  • Removable Components: Features a removable focusing lens barrel and optical fibers, providing flexibility for using the proper fiber core optimized for a specific Raman instrument.
  • Dual Wavelength Measurement: Unique Raman probe with dual wavelength Raman measurement capability.
  • Colinear Optical Design: Combines two probe optics into one, with both laser beams focusing onto the same spot.
  • High Throughput Optics: Incorporates high throughput optics and a backscattering probe optical design for efficient Raman measurements.
  • Laser Combinations: Available with 532/785 nm laser combinations.
  • Narrow Bandwidth Filter: Utilizes a narrow bandwidth bandpass filter in the excitation optical train to filter out unwanted silica background.
  • High Rayleigh Rejection: Features a high Rayleigh rejection long-pass edge blocking filter (optical density > 10-6) to prevent the laser line from being transmitted into the collection optical fiber.

Frequently Asked Questions

What are the excitation wavelengths available for the Dual Wavelength Raman Probe?
The Dual Wavelength Raman Probe offers excitation wavelengths of 532 nm and 785 nm.
What is the spectral range of the Dual Wavelength Raman Probe?
The spectral range is 100-4000 cm-1, although the ultimate range is dependent on the spectrograph/detector used.
Can the Raman probe be used through glass and plastic containers?
Yes, the Raman probe can be used for measurements through glass and plastic containers.
What materials are used for the probe body and shaft?
The probe body is made of hard anodized aluminum, and the probe shaft is made of 316 stainless steel, with options for other metals such as Hastelloy and Inconel.
What is the operating temperature range for the probe?
The operating temperature range is 0-85 ⁰C for the non-immersion shaft and 0-325 ⁰C for the sealed shaft.
What is the maximum operating pressure for the probe?
The maximum operating pressure is 15 psi for the non-immersion shaft and 6000 psi for the sealed shaft.
Is the focusing lens barrel removable?
Yes, the focusing lens barrel is removable, allowing for flexibility in use.
Are custom fiber configurations available?
Yes, custom optical fiber core sizes and cable lengths are available to optimize performance for specific Raman instruments and applications.
When is 532 nm Raman excitation preferred?
532 nm excitation is often preferred for samples with strong Raman scattering efficiency, inorganic materials, semiconductors, and applications requiring higher signal intensity.
Can the probe be integrated with portable Raman systems?
Yes, the probe is compatible with many portable and benchtop Raman spectrometers that support FC and SMA fiber connections.

Got more questions? Use the inquiry form to ask the supplier directly.

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