Q-TUNE-IR is a 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.
There two types of OPO coatings available. The first one is optimized for maximum transmission in 2.1 µm range (option -TC1). The second one is optimized for maximum transmission in 3.3 – 3.9 µm range (option -TC2). See tuning curves in datasheet for comparison.
QLI breakthrough water-free laser crystal pumping technology allows to produce high quality laser beam with up to 100 mJ pulse energy. There are no chillers or bulky power supplies that one needs fit under the table. All laser electronics are 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 dedicated QLI pump laser for optimal match to your application. If high pulse energy is required, Q-TUNE-IR can be configured for 6 mJ output @ 3300 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 @ 3300 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 OPO wavelength and linewidth monitoring.
• Build-in broadband attenuator for pulse energy control.
• Air purging for removal of water vapor absorption lines and improved lifetime of optics.


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









Wavelength range, nm 2)

1380-4500 nm

Pulse repetition rate 3)

10 Hz

100 Hz

33 Hz

10 Hz

20 Hz

Pulse energy 4)


1.5 mJ

1 mJ

3 mJ

5 mJ

4 mJ


2 mJ

1.3 mJ

4 mJ

6 mJ

5 mJ

Linewidth 5)

<10 cm-1

Pulse duration 6)

3-4 ns typical

Pulse-to-pulse stability 7)

< 4.5 % RMS

Power drift 8)

± 3.0 %


horizontal, linear

Typical beam diameter 9)

3 mm

5 mm

6 mm

Typical beam divergence 10)

< 7 mrad

< 5 mrad

Jitter 11)

< 0.5 ns RMS

Pump laser output

Max pulse energy at fundamental wavelength 12)

20 mJ

14 mJ

50 mJ

80 mJ

60 mJ


Laser head

390× 620 × 153 mm3 (W×L×H)

Power adapter

192 × 178 × 46 mm3 (W×L×H) 13) 14)

Air purging unit

422 × 460 × 89 mm3 (W×L×H) 15)

Operating requirements

Cooling requirements

Air cooled (water-free)

Ambient temperature

15 – 30 ºC

Relative humidity (non-condensing)

10 – 80 %

Mains voltage

90-230 VAC, single phase, 47-63 Hz 14)

Average power consumption

< 50 W

<150 W

<80 W

< 120 W

1. Due to continuous improvements all specifications are subject to change. Unless stated otherwise all specifications are measured at 3300 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. There are two wavelengths at the exit port in 1800 – 2500 nm range corresponding to signal and idler of OPO. Configurations for single wavelength output and/or no gap in 2800-2900 nm range are available. Please inquire for details.
3. Factory-set pulse repetition rate in internal triggering mode. Pulse repetition rate can be divided-down to 1 Hz.
4. Pulse energy @3300 nm. See tuning curves for typical pulse energies at other wavelengths.
5. Broadband version is available, with linewidth up to 200 cm-1. Please inquire for details.
6. FWHM level at 1550 nm, measured with 350 ps rise time photodiode.
7. Measured during 30 seconds operation after warm-up.
8. 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.
9. Beam diameter is measured 20 cm from laser output at the 1/e2 level at 1550 nm.
10. Full angle measured at 1550 nm at the 1/e2 level.
11. In respect to falling edge of pump diode triggering pulse.
12. Laser pulse energy is optimized for OPO pumping may differ from stand-alone laser specifications indicated here.
13. Power adapter size depends of Q-TUNE-IR model.
14. Laser can be powered from appropriate 12 or 28 VDC power source, depending on model. Please inquire for details.
15. Air purging unit is supplied with integrated power adapter.