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Picosecond Pulsed Sources

VisUV

Versatile Picosecond Laser Module

  • Center emission wavelength 266, 355, 532, and 1064 nm
  • Pulse width < 70 ps (FWHM)
  • Average output power between 2 and 1000 mW (depending on wavelength)
  • Repetition rates from single shot up to 80 MHz, external or internal triggering
  • Collimated output
  • NEW: high power at 532 nm with VisUV-532-HP

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The VisUV laser is a versatile and flexible platform based on a Master Oscillator Fiber Amplifier (MOFA) concept with frequency conversion. The master oscillator generates infrared picosecond pulses at 1064 nm with variable repetition rates up to 80 MHz using the proven gain-switching techniques from PicoQuant. The output of this seed laser is directly connected to a multi-stage fiber amplifier, which boosts the output from the seed laser by several dB while maintaining the other characteristics of the seed laser beam like the emission wavelength, polarization and the pulse width.

Flexible wavelength configuration

The high pulse energies of the amplified 1064 nm infrared laser permit efficient wavelength conversions using second, third, and fourth harmonic generation (SHG, THG, FHG). In that way it is possible to generate picosecond pulses at 532, 355, and 266 nm with average optical power values of more than 250, 5 and 2 mW respectively.
Any wavelength can be offered indivivually or in combination with one or with both other wavelengths. Each wavelength is emitted from a separate beam output equipped with an individual shutter.

Flexible repetition rate

The VisUV can be operated at 12 different internally selectable repetition rates between 31.25 kHz and 80 MHz and can also be triggered externally by TTL or NIM signals at any repetition rate between single shot and 80 MHz.

Excellent beam quality

The VisUV features nearly perfectly circular and Gaussian shaped beam profiles (TEM00) which can be specified as values of M² < 1.1 and M2 < 1.2 at 532 nm and 355 nm, respectively.

Compact stand alone device

The VisUV is a stand alone device with a special design optimized for maximum heat dissipation. It includes all driving functions of the established PDL series laser driver such as choice of repetition rate and trigger source. An optional remote control for the VisUV allows to set the trigger source, the repetition rate, and the general output power of the laser.


VisUV versions with 2 or 3 output wavelengths

Any wavelength can be offered in combination with one or with both other wavelengths.

Optical output
Center wavelength 266 ± 1 nm 355 ± 1 nm 532 ± 2 nm
Maximum average output power > 2 mW > 5 mW > 250 mW
Pulse width (FWHM) < 70 ps
Spectral width << 1 nm
Output collimated beam* collimated beam collimated beam
Divergence < 2 mrad < 0.5 mrad < 0.5 mrad
Beam diameter 1.0 ± 0.2 mm 1.5 ± 0.2 mm 2.1 ± 0.2 mm
Beam quality

M2 < 1.1 (vertical),

M2 < 1.5 (horizontal)

M2 < 1.2 (typical ~ 1.1),

TEM00

M2 < 1.2 (typical ~ 1.02),

TEM00

PER > 25 dB
Max time delay between outputs < 1 ns
Power stability (12 hours)
(ΔT (ambient) < 0.5 K)
< 3 % rms

* limited collimation range

VisUV versions with single output wavelength

Model VisUV-266 VisUV-355 VisUV-532 NEW
VisUV-532-HP
VisUV-1064
(Preliminary)
Optical output
Center wavelength* 266 ± 1 nm 355 ± 1 nm 532 ± 2 nm 532 ± 2 nm 1064 ± 2 nm
Maximum average output power > 2 mW > 10 mW > 300 mW > 750 mW > 1000 mW
Pulse width (FWHM) < 70 ps < 70 ps < 70 ps < 1 ns < 80 ps
Spectral width << 1 nm
Output collimated beam** collimated beam collimated beam collimated beam collimated beam
Divergence < 2 mrad < 0.5 mrad < 0.5 mrad < 0.5 mrad < 1 mrad
Beam diameter 1.0 ± 0.2 mm 1.5 ± 0.2 mm 2.1 ± 0.2 mm 2.1 ± 0.2 mm 1.1 ± 0.1 mm
Beam quality

M2 < 1.1

(vertical)

M2 < 1.5

(horizontal)

M2 < 1.2

(typical ~ 1.1)

TEM00

M2 < 1.1

(typical ~ 1.02)

TEM00

M2 < 1.1

(typical ~ 1.02)

TEM00

M2 < 1.3, TEM00

PER > 25 dB > 25 dB > 25 dB > 25 dB > 18 dB
Power stability (12 hours)
(ΔT (ambient) < 0.5 K)
< 3 % rms

* 1064 nm is available only as single wavelength version of the VisUV
** limited collimation range

General Specifications (valid for all devices)

Repetition rates
Internal
Range user selectable:
80, 40, 20, 10, 5 or 2.5 MHz (80 MHz base frequency)
1000, 500, 250, 125, 62.5 or 31.25 kHz (1 MHz base frequency)
External via NIM input
Range <10 Hz to 80 MHz
Trigger level fixed trigger level at -400 mV
Connector NIM-CAMAC
External via TTL input
Range <10 Hz to 80 MHz
Amplitude - 5 to + 5 V (maximum limits)
Trigger level adjustable between -1 and +1 V
Connector BNC
Synchronization output
Amplitude < -800 mV into 50 Ohms (NIM)
Connector SMA
Delays
Trigger in (NIM) to Sync Out typ. 9 ± 1 ns
Trigger in (NIM) to Optical Out typ. 80 ns
Sync Out to Optical Out typ. 70 ns
Dimensions
Size (l × w × h) 352 x 336 x 82.5 mm
Weight ca. 9 kg
Operation
Temperature range 10 - 35 °C
Maximum power consumption 115 W

* 266, 355 and 532 nm are available simultaneously, single or any combination of two. 1064 nm is available only in single beam version.
** limited collimation range

Lasersign class4


All Information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice.

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