NT370 series tunable laser system comprises a nanosecond optical parametric oscillator and Q-switched pump laser in a single housing. The system features up to 15 mJ in mid-IR, hands-free wavelength tuning from 2500 to 4400 nm and from 4100 to 12000 nm , 10 or 20 hz repeptition rate, easy maintenance and separate output for pump laser beam.
NT370 series tunable laser seamlessly integrates in a compact housing the nanosecond optical parametric oscillator and Nd:YAG Q-switched laser.
Pumped by fundamental harmonics output the lasers provides the tuning in mid- and far-infrared spectral range.
NT373 model produces eye-safe output at 1.57 μm. NT373-XIRx model uses the output from eye-safe OPO to pump AgGaSe₂ crystal based cascade OPO for tunable output in 4.1-12 μm range. Several sets of optics should be used to cover the whole tuning range; the standard ranges of 4.1-6, 6-12 and 5-11 μm are available. Customized tuning ranges are available by request. The linewidth of NT373-XIRx model is nearly constant across tuning range and less than 6 cm⁻¹.
NT377 model produces tunable output in 2.5-4.4 μm range. Pulse energy is exceeding 10 mJ for wavelengths shorter than 3.6 μm, while linewidth is below 10 cm⁻¹ for the wavelengths longer than 3 μm.
Because of narrow linewidth of output radiation (typically in 6-10 cm⁻¹ range) the laser is suitable for many infrared spectroscopic applications, for example cavity ring-down spectroscopy, gas detection and remote sensing.
The device is controlled from the remote keypad or from PC through RS232 interface using LabView drivers that are supplied with the system. The remote pad features a backlit display that is easy to read even while wearing laser safety glasses.
System is designed for easy and costeffective maintenance. Replacement of flashlamps can be done without misalignment of the laser cavity and deterioration of laser performance. OPO pump energy monitoring system helps to increase lifetime of the optical components.