GEMS Horiba LabRAM Odyssey Raman Microscope Specifications

Overview

Fully integrated high resolution confocal Raman microscope, optimized for VIS-2200 nm. The setup includes a confocal Raman microscope, transfer optics, stigmatic spectrometer equipped with four gratings (300 gr/mm, 600 gr/mm, 1800 gr/mm, and 2400 gr/mm), multichannel CCD detector, 5 objectives (5x, 10x 50x, and 100x VIS as well as 50x NIR), and computer package with high performance LabSpec 6 spectroscopy software suite. Key features include:

  • Czerney-Turner spectrograph based on all reflective optics ensures the system is free of achromatic aberrations (seen with lens-based spectrographs), therefore allowing the coverage of a very wide spectral range.

  • Computer-controlled laser power selection from 9 different positions (100%, 50%, 25%, 10%, 5%, 3.2%, 1%, 0.1% and 0.01%), working from 400 nm to 2200 nm.

  • Patented adjustable kinematic mount for the Rayleigh-rejection filter (instrument platform accepts notch or edge filters). The system is currently configured with edge filters for 532 and 785 nm excitation; the mount enables automated fine-tuning of the filter operating angle to optimize low-frequency cut-off performance.

  • Motorized exchange of excitation wavelengths between 532 and 785 nm.

  • Software-controlled continuously adjustable confocal pinhole.

  • 800 mm focal length astigmatic flat field spectrograph based on concave mirrors providing the highest spectral resolution on the market.

  • Upgraded air cooled open electrode 1024x256 pixels CCD -70°C. Working from 200 up to 1100 nm, suitable for measurements in the UV, VIS and NIR.

Microscope

The Olympus BXFM is an open space microscope offering a large free space under the objective turret. Thus, it can be used with large sample holders like cryostats, high temperature cells, high pressure cells, or just large samples. For optimal stability, the sample stage is hard coupled to the LabRAM Odyssey, while focusing is achieved by adjusting the height of the microscope objectives instead of the sample stage. This microscope offers all the functions of a standard microscope.

Illumination

  • Brightfield reflected light: Euromex EK-1 fiber-optic source

  • Brightfield transmitted light: Schott KL 1600 LED fiber-optic source (Köhler; long-working-distance condenser)

  • Darkfield currently not available.

Camera

  • Side-port visualization camera: IDS Imaging Development Systems µEye+ USB3 Vision color CMOS camera (U3-3880LE series), Sony IMX178, 6.41 MP (3088 × 2076), 2.4 µm pixels

Objectives

  • 5× VIS: NA 0.10; WD 19.6 mm (MPlan N 5×/0.10 ∞/–/OFN22)

  • 10× VIS: NA 0.25; WD 10.6 mm (MPlan N 10×/0.25 ∞/–/OFN22)

  • 50× VIS: NA 0.75; WD ~4.8–5.1 mm (MPlan N 50×/0.75 ∞/0/OFN22)

  • 50× NIR: NA 0.65; WD ~4.8–5.1 mm (LCPlan N 50×/0.65 IR ∞/Si 0–1.2/OFN22)

  • 100× VIS: NA 0.90; WD 0.21 mm (MPlan N 100×/0.90 ∞/0/OFN22)

Additional Olympus objectives are available, including stage-optimized long-working-distance and correction-collar objectives for Raman measurements with Linkam stages.

Laser capabilities

The system provides 532 nm and 785 nm excitation (≥100 mW; narrow-bandwidth sources) with laser line bandpass clean-up and long-pass edge Rayleigh rejection for Stokes-side Raman (to ~50 cm⁻¹, configuration-dependent) and PL within the CCD detection range; optics are motorized and controlled in LabSpec 6.

Gratings

  • 300 gr/mm holographic grating blazed at 600 nm (spectral range 250–1300 nm)

  • 600 gr/mm holographic grating blazed at 500 nm (spectral range 360–1250 nm)

  • 1800 gr/mm holographic grating blazed at 500 nm (spectral range 325–900 nm)

  • 2400 gr/mm holographic grating blazed at 400 nm (spectral range 250–800 nm)

Calibration and spectral verification

The system is supplied with a silicon reference sample (Si chip mounted on a glass carrier) for routine wavenumber verification (e.g., using the characteristic Si Raman band at ~520 cm⁻¹). A neon emission lamp is available as an external spectral reference and can be inserted into the instrument using the cuvette/sample holder when wavelength verification is needed; neon line intensity is adjustable.

Motorized positioning and Raman mapping

Motorized XY stage (75 mm × 50 mm travel; repeatability ≤ 1 µm; accuracy ±1 µm; minimum step size 50 nm)

  • Motorized Z device (minimum step size 0.01 µm)

  • Joystick + external controller; Raman autofocus capability

  • SWIFT™ ultra-fast Raman imaging package

  • LS6-VRM (Video Raman Matching) for optical–Raman spatial registration

Software

LabSpec 6 spectroscopy software suite. Licensed add-ons include IDFinder, EasyNav, and χSTaiN.

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