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LifeSpec II

Lifetime Spectrometer

Dedicated fluorescence lifetime spectrometer with the ultimate temporal resolution

LifeSpec II

Lifetime Spectrometer

  • High-Resolution TCSPC: Measure fluorescence lifetimes with ease using time-correlated single photon counting
  • Ideal for Short Lifetimes: Innovative zero temporal dispersion monochromator design enables fluorescence lifetime measurements down to 5 ps
  • NIR Coverage: NIR detector options to study NIR emitters out to 1700 nm
  • Flexible Laser Integration: Compatible with pulsed diode, supercontinuum and titanium: sapphire lasers
  • Compact: Save lab space with the compact design

Live Video Demonstration

Send us your samples, and we can measure them live in an online demonstration

Contact us to arrange an online demonstration

Sample Holder Options

Wide variety of sample holders for solids, liquids, and powders available

NIR Coverage

NIR PL lifetimes available with an additional detector

5 ps Lifetimes

Achieved with fast laser and detector

Pulsed Laser Diodes

Our family of high-performance lasers are perfect excitation sources for fluorescence lifetime measurements

305 fs/channel

Fast TCSPC electronics for ultimate time resolution

Bespoke Development

Fully customisable systems for your requirements
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PRODUCT DESCRIPTION

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The Lifespec II is a compact, fully integrated, high performance, time-correlated single photon counting (TCSPC) fluorescence lifetime spectrometer for fast lifetime applications.

Its zero temporal dispersion optics, using double monochromators in subtractive mode, sets the standard for ultra-fast decay measurements. Lifetimes < 5 ps are achieved if using a fast laser (ps or fs) for excitation.

The system is a fully automated solution, combining hardware and software in a single package for fundamental research and routine laboratory applications. Data acquisition modes range from fluorescence lifetime decay acquisitions and time-resolved spectra to automated time-resolved anisotropy measurements and automated temperature maps.

The LifeSpec II requires at least one picosecond pulsed diode laser and pulsed LED, supercontinuum laser or Ti:Sapphire laser (with suitable pulse picker) for operation. Multiple lasers can be simultaneously coupled to the instrument.

PRODUCT IMAGE

Options and Upgrades

Lasers & LEDs
Sample Holder Options
Detector Upgrades
Polarisation / Anisotropy
Lasers & LEDs

The LifeSpec II spectrometer can be used with all modern high repetition rate pulsed sources, such as picosecond pulsed diode lasers and LEDs, supercontinuum “white” picosecond pulsed lasers, and femtosecond Ti:Sapphire lasers. The standard LifeSpec II comes with an adjustable receptor flange for Edinburgh Instruments picosecond pulsed diode lasers  and UV-LEDs.

Sample Holder Options
Single Cuvette Holder

The Lifespec II standard cuvette holder features water/coolant circulation for adjusting temperature, filter slots, and monitoring of the sample temperature by the operating software.

Powders, Thin-Films and Solid Sample Holders

A range of single position front-face sample holders are available for powders, thin-films and solids. These include linear staged holders, rotational holders and clamps.

Temperature Control Options

Bath/Refrigerator (-25°C to +150°C), EPR Dewar (77 K) enable temperature control of samples at low cost.

A range of open and closed cycle (cryogen-free) cryostats are available for the Lifespec II, from 77 K (liquid nitrogen) or 4 K (liquid helium). Software control and mounting mechanics for the sample chamber are provided.

TE cooled cuvette holders are offered with a selection of temperature ranges controlled by the software, from -50°C to +15 °C.

Detector Upgrades

The choice of detector is informed by the emission range and lifetime of the sample. Photomultiplier tube (PMT) detectors are available with different spectral coverages and temporal responses.

The following PMTs are available:

  • Standard PMTs up to 1010 nm – recommended for ns lifetimes
  • High speed PMTs up to 920 nm – recommended for 100s of ps lifetimes
  • MCP-PMT up to 850 nm – recommended for ps lifetimes
  • NIR-PMTs up to 1700 nm for NIR emitting samples with ns lifetime

All PMTs are cooled and photon-counting for maximum sensitivity.

Polarisation / Anisotropy

The software-controlled polariser upgrade makes it possible to measure time-resolved fluorescence anisotropy in the Lifespec II. An excitation polariser may not be needed if the laser’s emission is naturally polarised, which is the case for Ti:Sapphire and picosecond-pulsed diode lasers.

For precise fluorescence decays (energy relaxation), polarisers may be required to eliminate rotational artifacts that are superimposed on the fluorescence decay (“magic angle” measurements).

TECHNICAL SPECIFICATIONS

Standard Configuration
Detectors
Instrument Response Function
Standard Configuration
Specification
Optical Configuration90° between excitation and emission beam path
Mode of OperationTime-Correlated Single Photon Counting (TCSPC)
Optional Multi Channel Scaling (MSC) Upgrade
Excitation Source OptionsAll high rep rate pulsed sources such as picosecond pulsed diode lasers (EPL Series, HPL Series) and LEDs (EPLED Series), supercontinuum pulsed lasers and femtosecond Ti:Sapphire lasers.
Lifetime Range5 ps – 10 µs (depending on source and detector choice)
Up to 1 s with MSC upgrade
Detector Options230 nm – 650 nm, 230 nm – 850 nm, 500 nm – 1700 nm
Mechanical Spectral Range200 nm – 900 nm (standard) plus 800 nm – 2000 nm (optional for infrared PMT detectors)
Spectral Band Pass0 to 60 nm (computer controlled)
Temporal DispersionZero (negligible)
Laser Beam Attenuation4 orders of magnitude, continuously adjustable (computer controlled)
Spectrometer SoftwareF980 Software complete package for data acquisition and lifetime data analysis.
Detectors
Wavelength CoverageDetector Response WidthDark Count Rate
High Speed Blue PMT230 nm – 650 nm 250 ps<100 cps
High Speed Red PMT230 nm – 850 nm250 ps<100 cps
MCP-PMT230 nm – 850 nm<25 ps<10 cps
NIR-PMT-1700 (LN2)300 nm – 1700 nm800 ps<100,000 cps
NIR-PMT-1700 (TE)950 nm – 1700 nm400 ps<100,000 cps
Instrument Response Function
Attention: The internal data of table “96” is corrupted!

DOWNLOADS

  • LifeSpec II Time-Resolved Spectrometer Brochure
  • TCC2 Lifetime Electronics Module Datasheet
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