Picosecond Fluorescence Lifetime Measurement System from Hamamatsu Photonics

The Hamamatsu Picosecond fluorescence lifetime measurement system has been developed in response to the requirements of researchers studying such materials. The use of a "streak camera", an optical transient recorder with picosecond time response, makes ultrafast time-resolved spectrophotometry a reality.

The use of streak camera technology allows detection sensitivities in the photon counting region. For simultaneous wavelength and time measurements, a spectrometer can be added to the system. Measurement parameters such as wavelength and time settings are controlled by a computer for simplified laboratory use.

Features

  • Simultaneous multi-wavelength measurement
    Time-resolved spectrum is acquired in a very short time since fluorescence lifetimes are measured over multiple wavelengths without scanning.
  • Two-dimensional photon counting
    Ultra-high sensitivity and simultaneous multiple-wavelength measurement capabilities are realized by the combination of photon counting and streak camera techniques. Because fluorescence phenomena at multiple wavelengths can be measured simultaneously, even very-low fluorescence can be detected and measured with high efficiency, a feature not available with previous methods.
  • A wide dynamic range better than 100 000:1
    Measures very-low fluorescence with a dynamic range better than 100 000:1*. This allows the an analysis of multi-component fluorescence lifetime with high accuracy. *Specified value by streak camera S-20 C10627.
  • Measures fluorescence lifetime with good S/N ratio with short integration time
    The streak sweep can be operated at up to 20 MHz. Through integration of this high-speed repetitive sweep, measurement with a high S/N ratio can be carried out quickly.
  • Covers fluorescence phenomena from picoseconds to milliseconds
    Because the sweep time can be varied from 1 ns to 10 ms, a wide range of fluorescence lifetime measurements from picoseconds to milliseconds is possible. For higher temporal resolution, an universal streak camera is optional selection.
  • Covers a wide wavelength range from UV to NIR
    Two streak camera are available, with sensitive regions of 200 nm to 850 nm or 400 nm to 900 nm. NIR streak camera is the optional for the measurement from 1000 nm to 1650 nm.
  • Standard optical system allows easy optical alignment

Specifications

System name

Nitrogen-Laser-Pumped Dye Laser system

Wavelength range

200 nm to 850 nm, 400 nm to 900 nm

Detector

Czerny-Turner type (with aberration-corrected toroidal mirror) f=300 mm F4.0

Grating

Three gratings can be installed at one time. (Select from 40 gr/mm to 1200 gr/mm)

Measurement wavelength range

316 nm (Using 40 gr/mm) to 9 nm (Using 1200 gr/mm)

Wavelength resolution

5.1 nm Using (40 gr/mm) to 0.15 nm (Using 1200 gr/mm)

Time axis

1 ns to 10 ms /full scale

Sweep repetition rate

Max. 10 Hz

Excitation wavelength

337 nm, 365 nm to 925 nm

Excitation pulse width

800 ps (Fiber edge output)

Temporal resolution (Deconvolution processing)

100 ps