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Cavitar | CAVILUX Smart UHS

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CAVILUX Smart UHS is a powerful pulsed diode laser light source with very short pulses and very high repetition rates. It is an ideal light source for ultra high-speed cameras up to 10 MHz. CAVILUX Smart UHS can generate pulsed light power of hundreds of watts at as short as 10 ns pulses. The light ...Read more
  • Description
  • Specifications

CAVILUX Smart UHS is a powerful pulsed diode laser light source with very short pulses and very high repetition rates. It is an ideal light source for ultra high-speed cameras up to 10 MHz.

CAVILUX Smart UHS can generate pulsed light power of hundreds of watts at as short as 10 ns pulses. The light output is essentially monochromatic with low degree of coherence, which is ideal for illumination purposes as there are no chromatic aberrations or speckle.

Target applications include:

  • Shock-waves
  • Flows of particles, droplets, sprays
  • Welding and coating
  • Ballistics
  • Materials testing (e.g. DIC, Hopkinson bar)

Specifications

  • Wavelength options 640 nm (visible) and 810 nm (invisible)
  • 640 nm: 200 W and 400 W
  • 810 nm: 300 W and 500 W
  • Stand-alone operation
  • One control unit can drive 1 laser unit
  • Pulse duration 10 ns … 150 ns with 10 ns steps or up to 30 µs following sync pulse duration
  • Duty cycle 99 % for max 30 µs cumulative laser active time
  • Continuous mode with 0,3 ‰ duty cycle

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640 nm: 200 W and 400 W and for 810 nm: 300 W and 500 W

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Understanding the Main Features of Cavitar’s CAVILUX Smart and CAVILUX HF

Feature CAVILUX Smart CAVILUX HF
Wavelength 640 nm or 810 nm 810 nm
Fiber core diameter 5 mm or 3 mm 1.5 mm
Minimum pulse duration with peak power reaching the specific pulse power 30 ns 100 ns
Minimum pulse duration with lower power than peak power 10 ns 50 ns
Max. duty cycle (High speed mode) 0.1 % 2 %
Max. repetition rate (30 ns pulses) 33 kHz -
Max. repetition rate (100 ns pulses) 10 kHz 200 kHz
Max. repetition rate (1 µs pulses) 1 kHz 20 kHz

* with peak power reaching the specified pulse power

Wavelength

If visible light is necessary, then CAVILUX Smart 640 nm is the standard product (not taking into account possible customized solutions). The CAVILUX HF is equipped with a visible laser pointer beam (green light). Color cameras typically have an IR cut filter in front of the sensor which blocks 810 nm. Some cameras allow the removal of that filter and in this case CAVILUX 640 nm and 810 nm can be used.

Fiber core diameter

CAVILUX Smart has a fiber core diameter of either 5 mm (400 W @ 640 nm) or 3 mm (500 W @ 810 nm, 200 W @ 640 nm), whereas CAVILUX HF has a fiber core diameter of 1.5 mm. This means that CAVILUX HF has 4-11 times higher brightness than CAVILUX Smart. Higher brightness enables the illumination of a smaller area from a certain distance or, alternatively, the illumination of a certain area from a greater distance. CAVILUX Smart 200 W provides a higher brightness than CAVILUX Smart 400 W if the illuminated area is smaller than 3 mm.

Minimum pulse duration

The minimum pulse duration for CAVILUX Smart enabling full output power is ~30 ns. CAVILUX Smart can create pulse durations up to 10 ns but then the output power is lower. The minimum pulse duration for CAVILUX HF at full power is ~100 ns and 50 ns at lower output power. A very short pulse may be needed for removing motion blur when a small and fast-moving object is studied at high magnification. CAVILUX Smart has shorter rise and fall times than CAVILUX HF. Therefore, Smart can generate extremely short pulses (below 100 ns) more accurately than CAVILUX HF.