Q-TUNE-IR - laser for infrared spectroscopy

  • Seamless laser and Optical Parametric Oscillator (OPO) integration.
  • Remote control via PC.
  • Turnkey performance due water-free pump laser design.
  • Guaranteed > 2 Gshot pump diode lifetime.
  • Microprocessor controlled operation with self-optimisation, self-calibration capability.
  • Hands-free, automated tuning from 1380 to 4500 nm.
  • >15 mJ pulse energy at the peak of tuning curve.
  • <10 cm-1 linewidth (broadband ~200 cm-1 version is available).
  • Up to 20 Hz pulse repetition rate.
  • Internal or external triggering modes.
  • Separate output port for access to pump laser beam.
  • Low power consumption – from 50 to 100 W depending on model.
  • Can be powered from +12 VDC or +28 VDC source.

Download product datasheet

Get all details about product

Q-TUNE-IR is high peak power coherent light source for infrared spectroscopy, infrared spectrophotometry, metrology, single molecule vibrational microscopy, remote sensing.
Q-TUNE-IR employs Optical Parametric Oscillator (OPO) to produce tunable wavelength in 1380-4500 nm range with linewidth of less than 10 cm-1. Broadband version with linewidth up to 200 cm-1 is available by request.
The heart of any laser system is master oscillator. QLI breakthrough water-free laser crystal pumping technology allows to produce high quality laser beam with up to 120 mJ pulse energy at 1053 or 1064 nm. Less than 7 ns pulse duration produced by pump laser is one more advantage, facilitating operation of OPO, which requires high peak power pulses for reliable operation.
Advanced 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 housing of the Q-TUNE-IR and the only external module is mains adapter that provides 12 or 28 VDC, 50-150 W power (depending on model).
Q-TUNE-IR can be configured with different our pump lasers for optimal match to your application. If high pulse energy is required, Q-TUNE-IR can be configured for 6.5 mJ output @ 3500 nm at 10 Hz pulse repetition rate. Cost effective solution is also available, Q-TUNE-IR-C10 can be configured for 10 Hz operation with 2 mJ @ 3500 nm pulse energy.
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-IR. API is also provided for integration with user devices.
In addition to tunable wavelength output, the Q-TUNE-IR provides a extra port for access to the pump laser beam.

Optional extensions available by request:
• Compact spectrometer for monitoring of OPO wavelength and linewidth.
• Build-in broadband attenuator for pulse energy control.
• Dispersive wavelength selector for spectrally pure output.

  • • Infrared spectrophotometry
    • Cavity ring-down spectroscopy
    • Gas spectroscopy
    • Single molecule vibrational spectroscopy
    • Scanning near-field optical microscopy
    • Remote sensing






Wavelength range, nm

1380-4500 nm

Pulse repetition rate2)

10 Hz

20 Hz

Pulse energy 3)

2 mJ @3500 nm

6.5 mJ

@3500 nm

5 mJ

@3500 nm


<10 cm-1 (<200 cm-1 optional)

Pulse duration 4)

3-4 ns typical


stability 5)

<4.5 % RMS

Power drift 6)

± 3.0 %


horizontal, linear

Typical beam

diameter 7)

3 mm

5 mm

Typical beam

divergence 8)

< 7 mrad

< 5 mrad

Jitter 9)

< 0.5 ns RMS

Pump laser output

Max pulse energy at fundamental

wavelength 10)

15 mJ

80 mJ

60 mJ


Laser head

( W×L×H)

390× 620× 135 mm3

390× 620× 153mm3

Power adapter

(W×L×H) 11) 12)

50×125×32 mm3

192 × 178 × 46 mm3

Operating requirements

Cooling requirements

Air cooled (water-free)

Ambient temperature

15 – 30 ºC

Relative humidity


10 – 80 %

Mains voltage

90-230 VAC, single phase, 47-63 Hz 12)

Average power consumption

< 50 W

< 80 W

< 100 W

  1. 1. Due to continuous improvements all specifications are subject to change. Unless stated otherwise all specifications are measured at 3500 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. Factory-set pulse repetition rate in internal triggering mode. Pulse repetition rate can be divided-down to 1 Hz.
    3. See tuning curves for pulse energies at other wavelengths.
    4. FWHM level at 1506 nm, measured with 350 ps rise time photodiode.
    5. Measured during 30 seconds operation after warm-up.
    6. 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.
    7. Beam diameter is measured 20 cm from laser output at the 4σ level at 1506 nm using photoburn method.
    8. Full angle measured at the 4σ level using knife edge method.
    9. In respect to falling edge of pump diode triggering pulse.
    10. Laser pulse energy is optimized for OPO pumping may differ from stand-alone laser specifications indicated here.
    11. Power adapter size depends of Q-TUNE-IR model.
    12. Laser can be powered from appropriate 12 or 28 VDC power source, depending on model. Please inquire for details.