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) 644-1697 | 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). Probe source is a Xenon lamp and a Tungsten Halogen lamp (for longer time scales). A cryostat is also available to perform temperature dependent measurements from 77 K to 300 K. The instrument can be used to measure liquid, power, solid and thin film samples.
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, 200-800 nm), 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: $15/hour
External (academic): $45/hour
External (commercial): $90/hour
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: $12/hour
External (academic): $36/hour
External (commercial): $72/hour
Location:
CSL 3701
Ultrafast Systems WEBSITE »Coherent WEBSITE »
Horiba JY Fluoromax-4 Fluorometer
The Fluorometer can perform steady state fluorescence spectra with temperature control and time correlated single photon counting (TCSPC) fluorescence lifetimes. The instrument can measure liquid, powder and thin film samples.
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
- 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: $10/hour
External (academic): $30/hour
External (commercial): $60/hour
Location:
CSL 5706
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
- Detectors: DLATGS (Broadband), Si Photodiode, MCT
- Grazing angle accessory: 55° – 85°
Rate:
Internal: $6/hour
External (academic): $18/hour
External (commercial): $36/hour
Location:
CSL 5706
COMPANY WEBSITE »
Hamamatsu Quantaurus-QY Spectrometer
The spectrometer is used for measuring photoluminescence absolute quantum yields (PL-QY). It consists of a Xenon lamp light source, integrating sphere sample chamber and CCD detector. In addition to PL-QY, different color measurements like chromatically, color temperature and color rendering index can also be performed. It can accommodate liquid, power, solid and thin film samples.
Specifications:
- Model C11347-11
- 150 W Xenon arc lamp light source
- Excitation wavelength : 250 nm to 850 nm
- PL measurement wavelength range: 300 nm to 950 nm
Rate:
Internal: $10/hour
External (academic): $30/hour
External (commercial): $60/hour
Location:
CSL 5706
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: $12/hour
External (academic): $36/hour
External (commercial): $72/hour
Location:
CSL 3701
Ultrafast Systems WEBSITE »Coherent WEBSITE »
PerkinElmer Lambda 950 UV/VIS/NIR Spectrophotometer
The Lambda 950 is a wavelength scanning double-beam spectrometer. It uses either deuterium or tungsten-halogen light source to cover the UV/VIS/NIR spectral range. It has two detectors – a Hamamatsu R6872 photomultiplier for the UV/VIS and a Peltier cooled PbS detector for the NIR. The instrument can be used to measure liquid, solid and thin film samples. In addition to standard absorbance measurements, Universal Reflectance Accessory (URA) enables high-precision absolute reflectance measurements.
Specifications:
- Wavelength range: 190-3300 nm
- Spectral resolution: 0.05 nm UV/VIS; 0.20 nm NIR
- URA angle range: 8-65°
Rate:
Internal: $7/hour
External (academic): $21/hour
External (commercial): $42/hour
Location:
CSL 5706
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. Linkam THMS600 heating and freezing stage system is available for temperature dependent Raman measurements.
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
- Linkam THMS600 temperature range: -170°C to 200°C
Rate:
Internal: $22/hour
External (academic): $66/hour
External (commercial): $132/hour
Location:
CSL 3701
COMPANY WEBSITE »