Q-TUNE - air-cooled, diode-pumped, tuneable wavelength Q-switched laser

  • Seamless laser and Optical Parametric Oscillator (OPO) integration.
  • Turnkey performance due water-free pump laser design.
  • Microprocessor controlled operation with self-optimization, self-calibration capability.
  • Guaranteed >2 Gshot pump diode lifetime.
  • Hands-free, automated tuning from 210 to 2300 nm.
  • Up to 100 Hz pulse repetition rate.
  • Up to 8 mJ pulse energy in visible range.
  • <6 cm-1 linewidth.
  • Internal or external triggering modes.
  • Separate output ports for access to pump laser wavelengths.
  • Low power consumption – from 50 to 150 W depending on model.
  • Air purging for long lifetime of UV optics.

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Q-TUNE is using Optical Parametric Oscillator (OPO) to produce tunable wavelength in 410-2300 nm range with linewidth narrower that 6 cm-1. Optional second harmonic generator extends tuning range to 210-410 nm with linewidth narrower that 12 cm-1. Combined with shorter than 5 ns pulse duration and up to 100 Hz pulse repetition rate Q-TUNE is perfect coherent light source for temporally resolved spectroscopy, metrology, photoacoustic imaging.
QLI breakthrough water-free laser crystal pumping technology allows to produce high quality laser beam with up to 100 mJ pulse energy. Advanced laser design resulted in very compact, user-friendly turnkey system that requires little maintenance. There is no chillers or bulky power supplies that one needs to fit under the table. All laser electronics is integrated into housing of the Q-TUNE and the only external module is mains adapter that provides 12 or 28 VDC, 50-150 W power (depending on model).
Both pump laser and OPO are controlled trough single 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 Q-TUNE. API is also provided for integration with user devices.
In addition to tunable wavelength output, the Q-TUNE provides two extra ports for access to pump laser beams.
Optional extensions available by request:
• Air purging for long lifetime of UV optics.
• Compact spectrometer for monitoring of OPO wavelength and linewidth.
• Fiber coupled OPO output.

  • Temporally resolved laser spectroscopy (for example, Light Induced Fluorescence Spectroscopy (LIFS))
  • Non-linear laser spectroscopy.
  • Confocal microscopy.
  • Metrology.
  • Photo-acoustics imaging.







Wavelength range, nm 2)


SH extension

410 – 2300 nm

210-410 nm

Pulse repetition


10 Hz

100 Hz

10 Hz

33 Hz

10 Hz

Pulse energy 4)

>1 mJ

>5 mJ

>8 mJ


<6 cm-1

Pulse duration 5)

<5 ns


stability 6)

<4.5 % RMS

Power drift 7)

± 3.0 %



Typical beam

diameter 8)

3 mm

5 mm

6 mm

Typical beam

divergence 9)

< 3 mrad

< 5 mrad

Jitter 10)

< 0.5 ns RMS

Pump laser outputs 11)
Max pulse energy at 12)


15 mJ

50 mJ

80 mJ

2nd harmonic

7 mJ

20 mJ

30 mJ

3rd harmonic

5 mJ

20 mJ

30 mJ


Laser head

( W×L×H)

390× 620× 135 mm3

390× 620× 153 mm3

Power adapter

(W×L×H) 13)

50×125×33 mm3

192 × 178 × 46mm3

Operating requirements

Cooling requirements

Air cooled (water-free)

Ambient temperature

15 – 25 ºC

Relative humidity (non-condensing)

10 – 80 %

Mains voltage

90-230 VAC, single phase, 47-63 Hz 13)

Average power consumption

<50 W

<150 W

<100 W

<150 W

  1. 1. Due to continuous improvements all specifications are subject to change. Unless stated otherwise all specifications are measured at 450 nm and max pulse repetition rate. The parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture.
    2. Optional extension down to 210 nm is available with second harmonic generator.
    3. Factory-set pulse repetition rate in internal triggering mode. Pulse repetition rate can be divided-down to 1 Hz.
    4. Measured at 450 nm output. See tuning curves for pulse energies at other wavelengths.
    5. FWHM level at 1064 nm, measured with 350 ps rise time photodiode.
    6. Measured during 30 seconds operation after warm-up.
    7. Over 8 hour period after 20 minutes of warm-up, when ambient temperature variation is less than ±2 °C. Power value is calculated every 1 second.
    8. Beam diameter is measured 20 cm from laser output at the 4σ level.
    9. Full angle measured at the 4σ level.
    10. In respect to falling edge of pump diode triggering pulse.
    11. Laser pulse energy is optimized for OPO pumping and may differ from stand-alone laser specifications.
    12. Outputs can be configured for simultaneous or non-simultaneous with OPO operation. Values indicated here are for non-simultaneous operation.
    13. Power adapter size depends of model.
    14. Laser can be powered from appropriate 12 or 28 VDC power source, depending on model. Please inquire for details.