Q2 Series - Diode-pumped, Q-switched Lasers

Quantas Q2 is a diode-pumped, air-cooled, Q-switched laser designed for a wide range of applications that require low pulse repetition rate and high energy pulses. The laser can produce up to 80 mJ at repetition rates from 10 to 200 Hz.

  • Description
  • Specifications
  • Options
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Features

  • Up to 80 mJ pulse energy, up to 2 W average power.
  • 1053 or 1064 nm output wavelength.
  • Air cooled (water-free).
  • Up to 100 Hz pulse repetition rate.
  • Smoothly variable pulse repetition rate for 1053 nm output wavelength models.
  • >2 Gshot lifetime of pump diodes.
  • Built-in sync pulse generator for triggering of user equipment.
  • Remote monitoring and control via built-in Ethernet interface.
  • Optional attachable 2nd harmonic generator.
  • Optional 2nd, 3rd, 4th or 5th stand-alone harmonic generator.
  • Optional attachable attenuator for fundamental wavelength.
  • Optional attachable pulse energy monitor.

Q2 series diode pumped, fully air-cooled, Q-switched laser is designed for wide range of applications that require high peak power pulses.
Our innovative water-free laser crystal end-pumping technology allows to produce Gaussian-like, low divergence laser beam. At the same time, Q2 is versatile platform that can be configured in many ways.
For example, Q2 be configured for 80 mJ pulse energy at 10 Hz pulse repetition rate. For high repetition rate configuration laser can produce up to 20 mJ at 100 Hz.
Q2 can configured to emit 1053 nm or 1064 nm wavelength from Nd:YLF or Nd:YAG laser crystals respectively. Due athermal properties of Nd:YLF crystal, at 1053 nm the laser can operate from single shot to maximum pulse repetition rate without changes in beam divergence or profile.
In short cavity configuration pulse duration can be reduced by 50% in comparison to standard configuration. Peak power of pulse can reach more than 30 MW at pulse energy up to 60 mJ.
Thermo-electric cooler based temperature control system eliminate risks associated with water cooling (leaks, organic contamination etc.) and reduce maintenance costs. If requested, standard fan-cooled heatsink can be detached from the laser body and laser can be mounted on user-supplied cold plate or other cooling system.
Innovative laser design resulted in compact, user-friendly turnkey system that requires little maintenance. There is no chillers or bulky power supplies that one needs fit under the table. All laser electronics is integrated into Q2 housing and the only external modules are lightweight controller box that provides laser control interfaces and mains adapter that provides 12 or 28 VDC, 30-100 W powering (depending on model).
Laser is controlled trough Ethernet port via build-in web-server. There is no need to install control software – any computer or even cell phone with modern web-browser will be able to control Q2. API is also provided for integration with user devices.
Low jitter triggering pulses for user equipment are available with up to 300 µs lead in internal triggering mode. In external triggering mode, laser pulsing can be externally triggered from delay generator.
The laser specifications for different pulse repetition rates are summarized in the tables below.

Options

  • 2nd harmonic with attachable harmonic generator SHG.
  • Up to 5th harmonic with stand-alone H-SMART
  • Motorized attenuator
  • Attachable pulse energy monitor
Model 1) Q2-B10 Q2-C10 Q2-D10 Q2-E10 Q2-F10 Q2-B20 Q2-C20 Q2-D20 Q2-E20
Pulse energy
    at 1053 / 1064 nm 8 mJ 15 mJ 30 mJ 60 mJ 80 mJ 10 mJ 20 mJ 50 mJ 70 mJ
Pulse duration < 8 ns < 7 ns < 5 ns < 7 ns < 5 ns
Repetition rate 10 Hz 20 Hz
Beam profile Gaussian, > 80 % fit
Pulse energy stability
    at 1053 / 1064 nm < 0.5 %
Optional harmonics
    at 526.5 / 532 nm 4 mJ 7 mJ 15 mJ 30 mJ 40 mJ 5 mJ 10 mJ 25 mJ 35 mJ
    at 355 / 351 nm 2.4 mJ 4.5 mJ 9 mJ 18 mJ 24 mJ 3 mJ 6 mJ 15 mJ 20 mJ
    at 263 / 266 nm 1.2 mJ 2.5 mJ 5 mJ 10 mJ 12 mJ 1.5 mJ 3 mJ 7.5 mJ 10 mJ
    at 211 / 213 nm 0.4 mJ 1 mJ 2 mJ 4 mJ 5 mJ 0.5 mJ 1 mJ 2 mJ 3 mJ
Optional attenuator
    Transmission range 0.5 - 95 %

 

 

Model 1) Q2-B50 Q2-C50 Q2-D50 Q2-100 Q2-A100 Q2-B100 Q2-C100 Q2-200
Pulse energy
    at 1053 or 1064 nm 10 mJ 20 mJ 40 mJ 2.5 mJ 5 mJ 10 mJ 20 mJ 1 mJ
Pulse duration < 7 ns < 6 ns < 5 ns < 10 ns < 8 ns < 7 ns < 10 ns
Repetition rate 50 Hz 100 Hz 200 Hz
Beam profile Gaussian, > 80 % fit
Pulse energy stability
    at 1053 or 1064 nm < 0.5 %
Optional harmonics
    at 526.5 / 532 nm 5 mJ 10 mJ 20 mJ 1.25 mJ 2.5 mJ 5 mJ 10 mJ 0.5 mJ
    at 355 / 351 nm 3 mJ 6 mJ 12 mJ 0.7 mJ 1.5 mJ 3 mJ 6 mJ 0.25 mJ
    at 263 / 266 nm 1.5 mJ 3 mJ 6 mJ 0.3 mJ 0.7 mJ 1.5 mJ 3 mJ 0.1 mJ
    at 211 / 213 nm 0.5 mJ 1 mJ 2 mJ 0.1 mJ 0.25 mJ 0.5 mJ 1 mJ 0.02 mJ
Optional attenuator
    Transmission range 1 - 95 %

1) Due to continuous improvements all specifications are subject to change. Unless stated otherwise all specifications are measured at fundamental wavelength and maximum pulse repetition rate. The parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture.

Harmonic generator SHG

  • Compact attachable 2nd harmonic generator compatible with Q2 and Q2HE series lasers.
  • Factory-configurable two exit ports.
  • Microprocessor controlled temperature tuned nonlinear crystal.
  • Remote monitoring and control via common with laser Ethernet interface.
  • Optional attachable pulse energy monitor.

SHG is compact second harmonic generator module is designed to be attached to our Q2 or Q2HE series lasers.

SHG has two exit ports that can be factory-configured in several ways. Standard configurations are listed in the table below. Second harmonic beam can be configured to be coaxial with fundamental beam (SHG-0 option) or can be separated from fundamental by build-in dichroic mirrors (SHG-1 and SHG-2 options).

When supplied together with Q2/Q2HE series laser, status of SHG can be remotely monitored and controlled from laser control panel (PC is required). Our pulse energy monitor of EM series can be attached to the exit port with digital or analog readout of pulse energy value.

Most of high performance birefringent crystals are hygroscopic, which might limit their lifetime in humid environment. However, if they are continuously kept at higher than ambient temperatures, the lifetime of crystals can be significantly extended and can be even longer than laser system itself. To keep crystals dry, SHG module needs to be always connected to the laser controller. If powering is not available, the module should be stored in dry environment.

Model SHG
Conversion efficiency > 50 %
Pulse duration 10 - 20 % shorter than fundamental

For more details, please concact us.

 

Harmonic generator H-SMART

  • Stand-alone 2nd, 3rd, 4th or 5th harmonic generator compatible with Q2 and Q2HE series lasers.
  • Microprocessor controlled temperature tuned nonlinear crystals.
  • Factory-configurable up to three exit ports.
  • Self-tuning of crystals for maximum pulse energy.
  • Build-in bypass and/or attenuator of fundamental beam (for some models).
  • Remote monitoring and control via common with laser or separate Ethernet interface.
  • Optional enhanced spectral purity of UV wavelengths.
  • Optional build-in or attachable motorized attenuator.
  • Optional build-in or attachable pulse energy monitor.
  • Optional fiber coupled output.
  • Optional air purging for improved lifetime of UV harmonic crystals and optics.

H-SMART is stand-alone automated harmonic generator module designed to be used with our Q2 and Q2HE series lasers. Module is intended to be mounted side-by-side with laser on common optical table or breadboard.
H-SMART has three exit ports that can be factory-configured to emit up to 5th harmonic wavelengths. Most common exit port standard configurations are listed in the “Exit port configuration options” table below. Custom configurations are available by request.

Model H-SMART
Conversion efficiency
    2nd harmonic > 50 %
    3rd harmonic > 30 %
    4th harmonic > 15 %
    5th harmonic > 15 %

For more details, please see our data sheet.

 

Motorized attenuators

  • Drop-in attachable to the laser body attenuators for 1st, 2nd, 3rd, 4th or 5th harmonics of Nd:YAG or Nd:YLF lasers.
  • Up to 98% maximum transmission.
  • Precise transmission control by stepper motor in microstepping mode (12800 steps/rotation).
  • Transmission adjustment accuracy <0.15%.
  • Remote control via common with laser Ethernet interface.
  • Optional stand-alone version for mounting on optical table.
  • Optional side port transforms attenuator to variable beam splitter.

Pulse energy of our Q-switched lasers can be conveniently lowered from maximum value by reducing current of pump diode. When less pump light is stored in lasing media, laser emits pulses with lower energy.

Above described method of pulse energy attenuation has its pros and cons. It is cost-effective, simple to implement, however, pulse energy change affects also other important laser beam parameters like pulse-to-pulse stability, beam divergence, pulse duration. For example, pulse-to-pulse energy stability of harmonics wavelengths might be more than 2 times worse at lower than nominal fundamental pulse energy.

AT series attenuators allows to attenuate laser pulse energy without changes in beam parameters.Attenuator consist of polarizer and waveplate. By changing of input beam polarization, transmission of beam can be changed for maximum to minimum value. Minimum transmission value depends on input beam polarization state and polarizer extinction ratio and typically is approx. 1 %.

Maximum possible transmission is determined by reflection and absorption losses of optical components. Several attenuators can be used in series if larger dynamic range is required. Attenuator transmission can be controlled trough common with laser Ethernet interface. API is provided for integration into user software.

Model AT1 AT2 AT3 AT4 AT5
Wavelength 1064 nm 532 nm 355 nm 266 nm 213 nm
Max transmission 98 % 95 % 90 % 75 % 65 %
Min transmission 1 % 0.5 %

For more details, please see our data sheet.

 

Attachable pulse energy monitor

For more details, please see our data sheet.

Do you have questions about Q2?

Write to us | info@topag.de

Give us a call | +49 6151 425978

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Do you have questions about our products?

Write to us | info@topag.de

Give us a call | +49 6151 425978

TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt, Germany
Phone: +49 6151 4259 78
Fax: +49 6151 4259 88
E-mail: info@topag.de