Raman

Contents

Overview

The LabRAM HR UV-NIR instrument is a single stage dispersive Raman microscope system with an 800 mm high-resolution spectrograph. The Raman/laser filtering is based on edge filters in an injection/rejection configuration. The system is adapted to a PARK XE-100 AFM system.


General information


Pdf manuals and software

Technical details

Lasers and optics

  • Helium-neon laser:
    • 633 nm @ 30 mW (estimated power on sample 17 mW)
  • Argon laser:
    • 488 nm @ 40 mW
    • 514 nm @ 50 mW
    • possible upgrade: 457 nm @ 10 mW
  • Infrared diode laser:
    • 785 nm @ 100 mW
  • Laser spot diameter: < 1 μm
  • Laser filter: edge filter allowing Stokes measurements above 100 1/cm
  • Attenuation filters: 0 dB, -3 dB, -6 dB, -10 dB, -20 dB, -30 dB, -40 dB (motorized)
  • Optics spectral range: 220...1600 nm

Optical microscope

  • Model: Olympus BX41
  • Stage: motorized XYZ stage with PC and joystick control
    • scan area 75 × 50 mm (X × Y)
    • step size 0.1 μm
    • allows automated acquisition of Raman maps
  • Light source: top and bottom
  • Objectives:
    • 10x, NA = 0.25, WD = 10.6 mm
    • 20x, NA = 0.35, long-WD (SLMPL)
    • 50x, NA = 0.75, WD = 0.37 mm
    • 100x, NA = 0.9, WD = 0.21 mm
  • Optical camera: μEye UI-1540SE-C-BG

Spectrograph

  • Focal length: 800 mm
  • Gratings: 600 gr/mm and 1800 gr/mm (76x76 mm, motorized)
  • Spectral resolution: 0.35 cm-1/pixel (at 633 nm with 1800 gr/mm grating)
  • Motorized entrance slit used as a confocal pinhole (continuously adjustable)
  • Axial confocal performance: < 2 μm (dependent on pinhole size)

Detector

  • Type: CCD
  • Resolution: 1024x256 (pixel size 26x26 μm)
  • Operating temperature: -70 °C
  • Spectral range: 200...1050 nm
  • Quantum efficiency: > 30 % (500...800 nm)
  • Typical read-out noise: 4 e- (rms)
  • Dark noise: < 0.002 e-/(pixel⋅s)

AFM adaptation

  • Commuting mirror for beam path selection
  • Objective: 50x, long-WD (SLMPL)
  • Beam angle: 30°
  • Optical camera: uEye UI-1220SE-C-HQ

Booking System

In order to obtain access to the equipment you should be registered as a user and make reservation via LTL equipment booking system. Contact A. Savin for details (registration and access to the booking system).

If you need the device for an extensive period of time (>3 h), you should do your measurement in the morning or late at night. The popular afternoon hours are best left for people doing quick measurements.

User List

Name Department Title Telephone E-mail Unit code
Savin, Alexander LTL, Aalto University Lab. manager +358 9 470 22962 savin@ltl.tkk.fi T5300
Tomi, Matti LTL, Aalto University Research assistant +358 40 502 1518 matti.tomi@iki.fi T53031
Susi, Toma LNMG, Aalto University Graduate Student +358 50 344 1574 toma.susi@tkk.fi T3040
Häkkinen, Pasi LTL, Aalto University Research assistant +358 50 301 8453 pthakkin@cc.hut.fi T53031
Frantti, Johannes Department of Applied Physics, Aalto University Dr., researcher +358 9 4702 3225 johannes.frantti@tkk.fi T3040
Tian, Ying Department of Applied Physics, Aalto University M.Sc. +358 408271339 ying.tian@hut.fi T3040
Liljeroth, Peter LTL, Aalto University Scientist +358 50 518 6399 liljeroth@iki.fi T5300
Mustonen, Kimmo LNMG, Aalto University M.Sc. +358 40 900 0931 kimmoa.mustonen@tkk.fi T3040
Oksanen, Mika LTL, Aalto University +358 40 718 6820 miheoksa@boojum.hut.fi T53031
Lyashenko, Dmitry LTL, Aalto University Ph.D. +358 46 811 7936 dl@lya.fi T53031
Emets, Vitaly LTL, Aalto University Doctoral student +358 50 512 4313 vitaly.emets@ltl.tkk.fi T53031
Järvinen, Päivi Department of Applied Physics, Aalto University Research Assistant +358 40 764 5016 ptjarvin@cc.hut.fi T3040
Song, Xuefeng LTL, Aalto University Post doc +358 50 344 2596 xuefengsong@ltl.tkk.fi T53031
Liu, Bilu Department of Applied Physics, Nanomaterials group, Aalto University Visiting Ph.D student +358 50 379284 biluliu@imr.ac.cn T3040
Borghei, Maryam Department of Applied Physics, Nanomaterials group, Aalto University Doctoral student +358 50 3608519 maryam.borghei@tkk.fi T3040
Jani, Saarenpää Department of Applied Physics, Nanomaterials group, Aalto University Research assistant 0400829952 jani.saarenpaa@tkk.fi T3040
Jaakko, Sulkko LTL, Aalto University Research assistant +358 50 3018563 jaakko.sulkko@aalto.fi T53031
Maoshuai He Department of Biotechnology and Chemical Technology, Aalto University PhD +358 503719188 maoshuai.he@aalto.fi T1010
Varghese, Neenu Department of Applied Physics, Nanomaterials group, Aalto University Visiting Scientist 0503719284 neenu.varghese@aalto.fi T3040
Banerjee, Kaustuv Department of Applied Physics, Aalto University PhD student +358466423476 kaustuv.banerjee@aalto.fi T30421
Anoshkin, Ilya Department of Applied Physics, Aalto University PhD +358 50 51 22786 ilya.anoshkin@aalto.fi T3040
Tan, Zhenbing LTL, Aalto University Post doc +3580503442564 zbtan@ltl.tkk.fi T53031
Kaukonen, Sampo Department of Applied Physics, Aalto University, New Energy Technologies group Research assistant +358 50 544 4241 sampo.kaukonen@aalto.fi T3040
Reynaud, Olivier Nanomaterials Group, Department of Applied Physics, Aalto University Doctoral student +358 50 57 50 348 olivier.reynaud@aalto.fi T3040
Syed Ghufran Hashmi Department of Applied Physics, Aalto University Researcher/ Graduate (PhD) Student +358 451199233; +358 505952671 ghufran.hashmi@aalto.fi T30404
Ya Chen Department of of Micro and Nanosciences, Aalto University Ph.D. +358 504312438 ya.chen@aalto.fi T40307
Yukari Fujioka Department of Applied Physics, Aalto University Ph.D. +358 504317210 yukari.fujioka@aalto.fi T30418
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