High-power and UV Lasers

VisUV

Picosecond Lasers in UV, Green, Yellow, and Orange

  • NEW:  high coherent VisUV (with coherent length > 85% ), HC model at 532
  • Digitial interface, can be controlled via USB, Sepia PDL 828 (with dedicated module SEM 828) and RS232
  • Available wavelengths 266, 280, 295, 355, 532, 560, 590 nm
  • Pulse width < 85 ps (FWHM)
  • Average output power from sub mW to 750 mW (depending on wavelength)
  • Repetition rate from single shot up to 80 MHz, external or internal triggering
  • Collimated output, optional fiber coupling
Image VisUV Versatile Picosecond Laser Module

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.

Compact stand alone device

The VisUV is a stand alone device featuring a special design optimized for maximum heat dissipation. While the classic VisUV laser modules were manually controlled through a series of switches and dials on the device’s front panel, this new generation of modules can now be easily controlled via a variety of interfaces. The VisUV can be connected to a PC via USB interface or (optionally) to a Sepia PDL 828 laser driver through a PicoQuant proprietary interface. In both cases, the VisUV can be fully controlled via an intuitive graphical user interface (GUI) running under Windows. Additionally, the VisUV features an RS232 interface for serial connection. The VisUV laser module includes all driving functions required for laser operation, such as choice of repetition rate, intensity and trigger source.

Flexible wavelength configuration

The high pulse energies of the amplified 1064 nm infrared laser permit efficient wavelength conversions. In that way it is possible to generate picosecond pulses at 266, 280, 295, 355, 532 nm with average optical power values ranging from sub mW up to 750 mW depending on the wavelength and power version. Any wavelength is available individually or in combination with one or two 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) and M² values down to 1.02 at some wavelengths.

Fiber coupling

Exception made below 355 nm, the beam output of the VisUV can be optionally coupled into a variety of optical fibers (multi-mode, single mode, or polarization maintaining single mode) via different connector types. We recommend FC/APC connectors for most applications, since they prevent back reflections that can interfere with laser stability. For details see our solutions for fiber coupling.


Optical output
Available wavelengths 266 to 590 nm
Spectral width << 1 nm
Polarization Extinction Ratio (PER) > 1 : 300 (> 25 dB)
Power Stability (12 hours) (ΔT (ambient) < 0.5 K) < 3 % rms
Other optical specs (power, pulse, beam shape) See tab Wavelengths
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 <1 Hz to 80 MHz
Trigger level fixed trigger level at - 400 mV
Connector NIM-CAMAC
External via TTL input
Range <1 Hz to 80 MHz
Amplitude - 5 to + 5 V (maximum limits)
Trigger level adjustable between - 1 V and + 1 V
Connector BNC
Synchronization output
Amplitude < -800 mV into 50 Ohm (NIM)
Connector SMA
Timing synchronous to the pulse repetition rate
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
For multiple optical outputs:
Max time delay between different output pulses		 < 1 ns
USB interface
Connector type USB Type-C 3.0
USB version 2.0
Compatibility PQ Laser Driver Software under WindowsTM 10
RS232 interface
Connector type Sub-D9 female
Baud rate 115200
Data 8 bit
Parity none
Stop 1 bit
Sepia interface
Connector LEMO type, PicoQuant proprietary interface to connect to dedicated Sepia Extention Module SEM 828
Compatibility PQ Laser Driver Software under WindowsTM 10
Gating
Connector SMA female
Remote interlock
Connector 4 pin LEMO EGG.00.304.CLL female
Dimensions
Size 352 × 337 × 82.5 mm (l × w × h)
Weight 6.5 to 9.0 kg1
Operation
Temperature range 10-30 °C
Power supply 100 to 250 VAC, 50/60 Hz, max 130 Watts

1 Single beam versions typ. 6.5 kg, multi-beam versions up to 9 kg

VisUV - Warning class 3b or 4 laser device


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.

The following table summarizes the optical specifications for the respective models

Type Wavelength
[nm]		 Pulse
(FWHM) [ps]		 Max. avg. power
[mW]		 Divergence
[mrad]		 Beam diameter
[mm]		 Beam quality
Multicolor modules
VisUV-266-355-5321 266 (± 1)2 < 85 > 2.0 < 2 1.0 ± 0.2 M² < 1.1 (vertical)
M² < 1.5 (horizontal)
  355 (± 1) < 85 > 5.0 < 0.5 1.5 ± 0.2 M² < 1.2 (typ. ~ 1.1), TEM00
  532 (± 2) < 85 > 250 < 0.5 2.1 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00
VisUV-280-5603 280 (± 1)2 < 85 > 1.0 < 2 1.0 ± 0.2 M² < 1.1 (vertical)
M² < 1.5 (horizontal)
  561 (± 1) < 85 > 150 < 0.5 2.1 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00
VisUV-295-5903 295 (± 1)2 < 85 > 0.5 < 2 1.0 ± 0.2 M² < 1.1 (vertical)
M² < 1.5 (horizontal)
  589 (± 1) < 85 > 60 < 0.5 2.1 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00
Single color modules
VisUV-2661 266 (± 1)2 < 85 > 2.0 < 2 1.0 ± 0.2 M² < 1.1 (vertical)
M² < 1.5 (horizontal)
VisUV-266-MIC3 266 (± 1) < 85 > 1.0 < 0.5 1.5 ± 0.2 M² < 1.2 (typ. ~ 1.1), TEM00
VisUV-3553 355 (± 1) < 85 > 10 < 0.5 1.5 ± 0.2 M² < 1.2 (typ. ~ 1.1), TEM00
VisUV-4883 488 (± 1) < 60 > 50 < 1 1.0 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00
VisUV-5321 532 (± 2) < 85 > 300 < 0.5 2.1 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00
VisUV-5603 561 (± 1) < 85 > 50 < 1 2.0 ± 0.3 M² < 1.1 (typ. ~ 1.02), TEM00
VisUV-532-HP1 532 (± 2) < 1000 > 750 < 0.5 2.1 ± 0.2 M² < 1.1 (typ. ~ 1.02), TEM00

1 this module is a class 4 laser product
2 Limited collimation range. low power version with improved beam quality is available on demand
3 this module is a class 3b laser product

VisUV - Warning class 3b or 4 laser device

All measurements shown may be subject to a 10% callibration error.

Each VisUV module undergoes an extensive burn-in test to ensure long-term stability and is shipped with a comprehensive set of test data. This test data is kept in our database, which already holds records of more than 15 years.

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.


The VisUV can be used for various applications, such as:


The following documents are available for download:


Latest 10 publications referencing VisUV

The following list is an extract of 10 recent publications from our bibliography that either bear reference or are releated to this product in some way. Do you miss your publication? If yes, we will be happy to include it in our bibliography. Please send an e-mail to info@picoquant.com containing the appropriate citation. Thank you very much in advance for your kind co-operation.

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