PRISM - Confocal Micro Raman Mapping System

• Optimized design for user.

• Up to two excitation wavelength available.

• < 1㎛ x, y spatial resolution and < 2㎛ depth resolution with true confocal design.

• Compact size frame, very few moving parts.

• Very fast mapping. (50 x 50 point about 1min : exposure time 0.01s)

• Fully motorized system. (Laser selection, Power control, Motorized slit, etc.)

Features

▶ Aberration Corrected Spectrograph

• Aberration corrected design based asymmetric Czemy-Turner with diffraction optics

• Excellently aberration corrected over the whole pixels on CCD array

  • RMS spot radius on the CCD < 10㎛​

• Excellently improved throughput and resolution compared to traditional Czerny-Turner spectrograph

• Best performance for low light application such as Raman spectroscopy

▶ Motorized Slit

• Precision entrance motorized slit

• The slit width can be adjusted between 10 to 1000㎛ with 10㎛ step resolution

▶ Fast Mapping

• Fast mapping function is able to offer many advantages to the user

• It is possible to use readout times as short as around 10㎳ per spectrum

  • Depending on CCD model line; lower is possible too​

▶ Wide Range Mapping

• There are no limits to mapping area imposed by the objective FOV

• From micro area to macro area with micro spatial resolution

• Max range : 75㎜ x 50㎜

  • Depending on sample stage model​

▶ Laser module

• Multiple excitation lasers

  • Supported wavelengths : 325nm, 488nm, 514.5nm, 523nm, 633nm, 785nm, etc.

• Power control

  • Includes 11 steps motorize ND filter controller

• Laser fiter selector

  • Motorized 2-positioning laser filter selector

▶ Spectrograph

• Feature

  • Adopt aberration corrected spectrograph for high-throughput and efficiency

  • On-axis and interchangeable grating turret design

• Spectral resolution

  • 1.5cm-1 per CCD pixel @1800gr/mm

  • 2.3cm-1 per CCD pixel @1200gr/mm 532 nm laser

▶ PRISM

• Objective

  • 20X Mplan (NA=0.4, WD=1.2mm)

  • 100X Mplan (NA=0.9, WD=0.15mm)

  • Spatial resolution : below 1 micron (x, y)

• Confocal Slit

  • Optimized 1 airy unit with continuous variable confocal slit

  • This leads to a xy spatial resolution improvement as well as along the optical axis (z-direction)

• Imaging

  • White light Koehler illuminator, 3M CMOS camera

▶ TE cooled CCD

• Pixel size

  • 26 x 26㎛

• Active pixels

  • 1024 x 127

• BVF (Back illuminated CCD) or FI (Front illuminated CCD)

▶ Motorized microscope xyz stage

• Travel range

  • 76 x 50nm

• Resolution

  • 50nm (X/Y), 2nm (Z)

• Mapping speed

  • 50 x 50 pixels < 1min (exposure time 0.01s)

▶ Computer interface

• Through single USB connector, some accessories may require additional USB and RS232 ports

▶ Fiber port

• Optional for adding external laser

▶ Physical dimensions

• 360mm(W) x 690mm(D) x 400mm(H)

Specification

▶ PRISM - Basic

• 1 Laser

• Motorized Slit

• Manual changed spectral range

• Interchangeable grating

▶ PRISM - Mid

• Up to 2 Lasers

• Adjustable confocal pinhole

• Automated grating

• Interchangeable grating

▶ PRISM - UV

Models

▶ Temperature Controlled Microscope Stage

• Temperature range

  • -196℃ ~ 420℃

• Sample area

  • 53.5 x 43mm

Accessory