As there is no generally accepted specification for the term ‘Ultrashort’ the lasers presented here range from nanoseconds (ns) down to femtoseconds (fs).
There are many methods for generating ultrashort pulses. Generally for the LEDs and Laser diodes detailed below the electronics have been carefully designed to allow optical pulses in the tens of nanoseconds to be obtained, with pulse repetition rates from CW to MHz.
For shorter pulse durations the lasers can operate in a Q-Switched or mode locked regime. In Q-Switching energy is stored in the amplifying medium by optical pumping while the cavity Q is lowered (i.e. Higher cavity losses) to prevent the onset of lasing. When the cavity Q is restored, the stored energy is suddenly released in the form of a short pulse of light. In this mode high pulse energies (mJ’s) can be achieved with pulse repetition rate in the Hz to kHz.
Mode locking can be both active and passive. Passively mode-locked lasers are typically based on a saturable absorber, which allows for the generation of short pulses but has issues with jitter and electronic control. For those applications that require synchronisation with an external electronic signal active mode locking techniques are employed.
Showing 17–23 of 23 results
Products | Product Code | Description |
|---|---|---|
 | Smart pulsed laser heads in the spectral range from 375 to 1550 nm, with power calibration | |
 | Classic laser head series with directly pulsed laser diodes, and emission lines covering the spectral range from 375 to 1990 nm | |
 | High powered picosecond light pulses at 266, 355, 515, 532, 560, 766, 1064, or 1532 nm. | |
 | 3-Colour Picosecond Laser Features: 3-Colour Picosecond Laser (450, 515, 640 nm) Compact, stand alone, affordable Pulsed and CW operation, fast CW switching Suitable for measuring Fluorescence lifetime (ns) and Photoluminescence lifetime (µs-ms) Triggerable internally and externally, up to 200 MHz Fully computer controlled Prima is a solution for researchers who: Need more than one […] | |
 | Compact Diode Lasers for OEM Integration Features: Compact design for integration Wavelengths between 375 and 1990 nm Pulse widths < 100 ps Fixed intensity setting Internally triggered or externally triggered versions Laser modules from the CPDL-M/S Series can be used for various applications including: Time-resolved measurements and fluorescence lifetime Diffusion measurements Testing and […] | |
 | Compact Diode Lasers for OEM Integration Features: Compact design for integration Wavelengths: 1030, 1064, 1530, 1550 nm (others upon request) Pulse width < 100 ps Any rep rate 1 kHz up to 100 MHz Average power up to 50 mW (including fibre amplifier) Flexible interface USB or RS 232 Applications: Laser modules from […] | |
 | Compact narrow linewidth picosecond fibre laser. Available at 1030 nm or 1064 nm. | |
 | Compact high energy picosecond laser. Available at 1064 nm and 532 nm. | |
 | Stand-alone high power laser device that generates picosecond pulsed laser emission at any wavelength from 765 and 780 nm, 1064 or 1530 nm | |
 | Stand-alone, high power laser devices that generate picosecond pulsed laser emission with a broad selection of wavelengths, 266, 280, 295, 355, 532, 560 or 590 nm |
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