Research
Spectroscopy Laboratory
The Spectroscopy Lab at FSU is home to a variety of instruments used for optical spectroscopy of solid-state and solution samples. The lab provides facilities for optical characterization via steady-state, using UV-VIS-NIR, FT-IR, Raman, fluorescence, and emission quantum yield measurements. Time-resolved absorbance and emission spectra/kinetics can be acquired from 250 fs to 1 ms time scales. The facility can be accessed by internal or external researchers after undergoing training or via sample submission (contact Dr. Winfred). Collaborative projects are welcome.
| Phone | Location | Hours | Facility Director |
| (850) 644-3468 | 1011, 116, 3701 CSL | 8:00-5:00 M-F | Dr. J.S. Raaj Vellore Winfred |
Laboratory Instruments
Edinburgh ns-Transient Absorption Spectrometer
The Edinburgh Instruments LP980-KS Laser Flash Photolysis Spectrometer can measure laser-induced transient absorption and emission kinetics and spectra using either a kinetic detector (photomultiplier tube for the UV/VIS, InGaAs detector for the NIR) or a gated intensified CCD detector using time gates as short as 10 ns. The pump laser is a Nd:YAG laser (10 Hz rep rate) operating at 355 nm (third harmonic) to pump an Optical Parametric Oscillator (OPO). The system is normally operated at 1 Hz. The probe is a 150 W pulsed Xenon arc lamp for kinetic and spectral measurements from multi-ns up to 300 µs. A 50 W Tungsten Halogen lamp is used for longer time scales. Most spectrometer and laser functions are computer controlled.
Specifications:
- Pump Wavelength: 200 nm to 2000 nm, pulse energy is wavelength dependent
- Probe Sources: 150 W Xenon lamp, CW and pulsed (230-900 nm); 50 W tungsten halogen lamp (>300 nm)
- Sample chamber with absorption and emission sample holders and right angle and quasi-collinear optics
- Andor iStar intensified CCD detector (1024×256), minimum 10 ns gate width
- Hamamatsu R928 photomultiplier detector (200-870 nm), 5 ns minimum response optimized for high-light conditions
- Hamamatsu R928 photomultiplier detector operating in Multichannel Scaling MCS mode and optimized for low-light conditions
- Hamamatsu G12180-230A InGaAs photodiode detector (900-1650 nm), 500 ns response
Rate:
Internal: $6/hr
External: $30/sample
Location:
CSL 3701
EDINBURGH INSTRUMENTS WEBSITE »CONTINUUM LASERS WEBSITE »
HELIOS fs-Transient Absorption Spectrometer
HELIOS Fire is a Transient Absorption Spectrometer that is used for spectral and kinetic investigations, of photo-excitation events, on the femtosecond and longer timescale. A Ti:Sapphire laser (Coherent Astrella, 100 fs, 1 kHz rep rate), along with an Optical Parametric Amplifier (Coherent OPerA Solo) is used provide pump wavelengths from UV to NIR region. Most spectrometer and laser functions are computer controlled.
Specifications:
- Pump Wavelength : 290 nm to 2600 nm
- Probe Wavelength : 320 nm to 800 nm
- Time window : 8 ns
- Optical Delay Line Resolution: 14 fs
- Temporal Resolution: ~150 fs
- Detector: 1024 pixel CMOS sensor (spectral response: 200 nm to 1000 nm)
- Sample type: Liquid and Thin films
Rate:
Internal (self-use): $10/hr
External: $60/sample
Location:
CSL 3701
Ultrafast Systems WEBSITE »Coherent WEBSITE »
Horiba JY Fluoromax-4 Fluorometer
Fluorometer set up to perform either steady state fluorescence spectra or time correlated single photon counting (TCSPC) fluorescence lifetimes.
Specifications:
- Detection: Hamamatsu R928P photomultiplier operating in photon-counting mode, 210-780 nm range
- Steady State: Temperature-controlled Peltier sample holder, temperature range -10 to +110°C
- Path length: 1 mm (with autoranging to 0.2 mm)
- TCSPC: Measures lifetimes ≥250 ps; NanoLED© excitation pulsing ≤1 MHz @ 295, 370, 560, 625 & 740 nm; FluoroHub electronics, DataStation collection software & DAS6 lifetime analysis software by the IBH division of Horiba
Rate:
Internal: $3/hr
External: $15/hr
Location:
CSL 116
COMPANY WEBSITE »
JASCO 6800 FT-IR Spectrometer
The FT-IR spectrometer is equipped with different light sources and detectors that enable measurements from Visible to Far IR regions. An attenuated total reflectance (ATR) sample chamber consisting of a monolithic diamond crystal with AR coating is used to characterize various types of samples (solids, powder, liquids and pastes). In addition to ATR, the instrument also has transmittance, grazing angle reflection (for thin films) and diffuse reflection accessories.
Specifications:
- Spectral range: 50 – 25000 cm-1
- Minimum resolution: 0.07 cm-1
- Grazing angle accessory: 55° – 85°
Rate:
Internal: $5/hr
External: $10/sample
Location:
CSL 116
COMPANY WEBSITE »
Hamamatsu Quantaurus-QY Spectrometer
Dedicated fluorometer for measuring photoluminescence absolute quantum yields (PL-QY) consisting of a xenon lamp light source, integrated sphere sample chamber and CCD detector.
Specifications:
- Model C11347-11
- 150 W Xenon arc lamp light source
- Path length: 1 mm (with autoranging to 0.2 mm)
- T250-850 nm selectable excitation wavelength
- back-illuminated cooled 1024 channel CCD detector
- 200-950 nm measurement wavelength range
Rate:
Internal: $6/hr
External: $30/hr
Location:
CSL 116
COMPANY WEBSITE »
HALCYONE fs-fluorescence Spectrometer
HALCYONE Fire is a femtosecond fluorescence spectrometer is used study spectral and kinetic properties of emissive excited states, on the femtosecond and longer timescale. A Ti:Sapphire laser (Coherent Astrella, 100 fs, 1 kHz rep rate), along with an Optical Parametric Amplifier (Coherent OPerA Solo) is used provide pump wavelengths from UV to NIR region.
Specifications:
- Pump Wavelength : 290 nm to 2600 nm
- Fluorescence Wavelength : 270 nm to 1600 nm
- Time Window : 8 ns
- Optical Delay Line Resolution: 14 fs
- Temporal Resolution: ~250 fs
- Detectors: PMT (spectral response: 230 nm to 700 nm) and CCD (spectral response: 230 nm to 950 nm)
- Resolution: 14 fs
- Sample type: Liquid and Thin films
Rate:
Internal (self-use): $10/hr
External: $60/day
Location:
CSL 3701
Ultrafast Systems WEBSITE »Coherent WEBSITE »
PerkinElmer Lambda 950 UV/VIS/NIR Spectrophotometer
The Lambda 950 is a wavelength scanning double-beam instrument operating in the ultraviolet, visible and near-infrared (UV/VIS/NIR) using either a deuterium or tungsten-halogen light source, one of two gratings – one for the UV/Vis, the other for the NIR – in the monochromator and two detectors – a Hamamatsu R6872 photomultiplier for the UV/VIS and a Peltier cooled PbS detector for the NIR.
Specifications:
- Wavelength range: 190-3300 nm
- Spectral resolution: ≤0.05 nm UV/VIS; ≤0.20 nm NIR
- Bandpass: 0.05-5.00 nm in 0.01 nm increments UV/VIS; 0.20-2.00 nm in 0.04 nm increments NIR
- Light beam passes through the sample compartment 90 mm above the base plate, 3-12 mm beam height
Rate:
Internal: $3/hr
External: $15/hr
Location:
CSL 116
COMPANY WEBSITE »
NanoDrop ND-1000 Spectrophotometer
The ND-1000 measures 1 µl liquid samples by trapping the liquid between two optic fibers. The gap between the fibers is controlled to give either a 1 mm or 0.2 mm light path. A pulsed xenon flash lamp light source passes through the sample and is dispersed over a fixed wavelength range onto a linear CCD detector array. The ND-1000 is designed to measure very small samples to yield qualitative results.
Specifications:
- Sample size: 1 µl
- Spectral range: 220-750 nm
- Path length: 1 mm (with autoranging to 0.2 mm)
- Wavelength range: 220-750 nm
- Wavelength resolution: 3 nm (FWHM @Hg 546 nm)
Rate:
Internal: $6/hr
External: $30/hr
Location:
CSL 116
COMPANY WEBSITE »
Horiba JY LabRam HR Evolution Raman Spectrograph
Microscope based Horiba LabRAM HR Evolution is a fully confocal, high-resolution (800 mm focal length) spectrometer that is well suited for broad range of applications. The instrument is coupled to three excitation lasers, has two selectable gratings and a CCD camera for detection. True confocal microscope along with motorized XYZ stage, offers high resolution 2D and 3D Raman images. Accessories include optics for polarized Raman spectroscopy and a setup to measure liquid and large samples in free space.
Specifications:
- Gratings: 600 gr/mm & 1800 gr/mm (2400 gr/mm & 3600 gr/mm gratings are available upon request)
- Excitation lasers: 532 nm (100 mW), 785 nm (90 mW), 633 nm (17 mW)
- Detector spectral range: 200 nm – 1050 nm
- XYZ stage: XY resolution (min step size) = 50 nm, Z resolution (min step size) = 0.01 µm
- Polarization optics spectral range : 400 nm – 1100 nm
Rate:
Internal: $6/hr
External: $30/hr
Location:
CSL 3701
COMPANY WEBSITE »
Nikon Eclipse Ti Inverted Microscope
Epifluorescence inverted microscope equipped with a LiveCell sample holder (model CC378A), Intensilight C-HGFI light source, 2 Sutter Instruments Lambda SC Smart shutters and Photometrics Coolsnap HQ2 CCD camera (1392×1040, 6.45 µm2 pixels).
Specifications:Model Nikon Eclipse TI-DH
Objectives:
- Plan Apo TIRF 60x/1.45 Oil,
- Plan Apo TIRF 100x/1.45 Oil,
- Plan Fluor 10x/0.30 DIC,
- S Plan Fluor ELWD 20x/0.45,
- S Plan Fluor ELWD 40x/0.60 DIC
Rate:
Internal: $5/hr
External: $25/hr
Location:
CSL 1011B CSL
COMPANY WEBSITE »