Becker & Hickl‘s BDU-SM series picosecond diode lasers are fully controlled and powered via a USB interface. Available wavelengths range from 375 nm to 785 nm. Pulse repetition rate 20, 50 and 80 MHz, and pulse width down to 40 ps. The lasers are available with elliptical or circular free-beam output, and with single-mode fibre output.
The BDU-SM lasers feature extraordinarily high timing stability and intensity stability. The optical pulse versus the electrical trigger output shifts by no more than 2 picoseconds over 10 minutes, even immediately after turn on. The power is stable within 1 %. No warm up-time is necessary for stable operation. Small size, absence of external components, and easy control of the laser parameters make the laser first choice for quick setup of experiments in a typical laboratory environment.
All bh pulsed diode lasers work with simple +12V power supply or pull their power from the USB port of a PC or Notebook Computer. All bh diode laser modules are directly compatible with the bh TCSPC modules.
Optical Specifications
| Repetition Rate, selected via USB | 20 MHz, 50 MHz, 80 MHz, for other repetition rates contact bh |
| Wavelengths | 375 nm, 405 nm, 445 nm, 470 nm, 485 nm, 515 nm, 640 nm, 685 nm, 785 nm, for other contact bh |
| Pulse width (FWHM, at medium power) | 30 to 90 ps |
| Pulse width (FWHM, at maximum power) | 60 to 300 ps |
| Power control range (ps mode, 80 MHz, power in free beam) | 0 to 1 mW OR 0 to 5 mW, depends on wavelength version |
| Power control range (CW mode, power in free beam) | 0 to 10 mW, limited by USB power supply limitations |
| Beam diameter, free beam | 0.7 mm x 1.2 mm |
| Polarisation | horizontal |
| Coupling efficiency into single-mode fibre, typically | 40% to 60 % |
Fluorescence lifetime
FLIM
Phosphorescence lifetime
FLIM-FRET
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
