NT270 series

Tunable Wavelength NIR-MIR Range DPSS Lasers

NT270 delivers hands‑free, no-gap tuning from from 2500 nm to 4475 nm at 1 kHz repetition rate from the one box. Wide IR tuning range established this laser as excellent choice for IR applications like scanning Near-field Optical Microscopy (s-SNOM) , single molecule vibrational spectroscopy, gas spectroscopy.

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NT270
Overview

Features

  • Customers recognized reliability
  • Two years warranty
  • Integrates DPSS pump laser and OPO into single housing
  • Separate output ports for the pump laser and OPO beams
  • OPO output wavelength range from 2500 nm to 4475 nm
  • Narrow linewidth
  • Hands-free, fast wavelength tuning*
  • <7 ns pulse duration
  • Remote control via key pad or PC

* Including automatic wavelength scan

Applications

  • Scanning Near-field Optical Microscopy (s-SNOM) microscopy
  • Single molecule vibrational spectroscopy
  • IR spectroscopy
  • Gas spectroscopy

Description

NT270 series tunable laser systems integrate into a single compact housing a nanosecond Optical Parametric Oscillator (OPO) and Diode-Pumped Solid–State (DPSS) Q-switched pump laser.

Diode pumping enables fast data acquisition at high pulse repetition rates up to 1 kHz while avoiding frequent flashlamp changes that are common when flashlamp pumped lasers are used.

The pump lasers do not require water for cooling, thus further reducing running and maintenance costs.

All lasers feature motorized tuning across the specified tuning range. The output wavelength can be set from control pad with backlit display that is easy to read even while wearing laser safety glasses. Alternatively, the laser can be controlled also from personal computer using supplied LabVIEW™ drivers.

High conversion efficiency, stable output, easy maintenance and compact size make our systems excellent choice for lots of applications.

Benefits

  • Hands-free wavelength tuning – no need for physical intervention
  • Wide (2500 – 4475 nm) tuning range is highly useful for s-SNOM and other IR applications
  • NT270 is the cost effective solution covering a wide tuning range from a single source
  • End pumping with diode technology ensures high reliability and lots of fired shots leading to low maintenance costs
  • High integration level saves valuable space in the laboratory
  • Air cooling eliminates the need for water, ensuring easy operation and simple installation or integration
  • In-house design and manufacturing of complete systems, including pump lasers, guarantees on-time warranty and post warranty services and spares supply
  • Variety of control interfaces: USB, RS232, LAN and WLAN ensures easy control and integration with other equipment

Specifications

ModelNT277
OPO specifications 1)
Wavelength range 2)
Idler2500 – 4475 nm
Pulse energy 3)
Idler80 μJ at 3000 nm
Pulse repetition rate1000 Hz
Pulse duration 4)5 –7 ns
Linewidth 5)< 10 cm‑1
Minimal tuning step 6)
Idler1 cm‑1
Polarization
Idlervertical
Typical beam diameter 7) 8)4 mm
Pump laser
Pump wavelength1064 nm
Typical pump pulse energy 9)1.9 mJ
Pulse duration 10)<10 ns
Beam qualityfit to Gaussian >90%
Pulse energy stability (StdDev)< 0.5 %
Physical characteristics
Unit size (W × L × H)305 × 701 × 270 mm
Power supply size (W × L × H)449 × 376 × 140 mm
Umbilical length2.5 m
Operating requirements
Coolingair-cooled
Room temperature18 – 27 °C
Relative humidity20 – 80 % (non-condensing)
Power requirements100 – 240 V AC, single phase, 50/60 Hz
Power consumption< 0.5 kW
Cleanliness of the roomnot worse than ISO Class 9
ModelNT277
  1. Due to continuous improvement, all specifications are subject to change. Parameters marked typical are illustrative; they are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise all specifications are measured at 3000 nm and for basic system without options.
  2. Available wavelength range. Inquire for custom IR option with tuning up to 12 µm.
  3. See tuning curves for typical outputs at other wavelengths.
  4. Measured art FWHM level with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
  5. Higher energy 10 – 150 cm‑1 option is available for 2500 – 4475 nm tuning range. Narrow linewidth (<10 cm‑1) operation mode is impossible with this option.
  6. For manual input from PC. When wavelength is controlled from keypad, tuning resolution is 1 nm.
  7. Measured at the wavelength indicated in the “Pulse energy” specification row.
  8. Beam diameter is measured at the 1/e2 level at the laser output and varies depending on the wavelength.
  9. The pump laser pulse energy will be optimized for the best OPO performance. The actual pump laser output can vary with each unit we manufacture.
  10. Measured at FWHM level with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.

Note: Laser must be connected to the mains electricity all the time. If there will be no mains electricity for longer that 1 hour then laser (system) needs warm up for a few hours before switching on.

Publications

Infrared Multiple Photon Dissociation Spectroscopy of Hydrated Cobalt Anions Doped with Carbon Dioxide CoCO2(H2O)n, n=1–10, in the C−O Stretch Region

E. Barwa, M. Ončák, T. F. Pascher, A. Herburger, C. van der Linde, and M. K. Beyer, Chemistry – A European Journal 26 (5), 1074-1081 (2020). DOI: 10.1002/chem.201904182.

High-resolution, high-contrast mid-infrared imaging of fresh biological samples with ultraviolet-localized photoacoustic microscopy

J. Shi, T. T. W. Wong, Y. He, L. Li, R. Zhang, C. S. Yung et al., Nature Photonics 13 (9), 609-615 (2019). DOI: 10.1038/s41566-019-0441-3.

Infrared Spectroscopy of Size-Selected Hydrated Carbon Dioxide Radical Anions CO2.−(H2O)n (n=2–61) in the C−O Stretch Region

A. Herburger, M. Ončák, C. Siu, E. G. Demissie, J. Heller, W. K. Tang et al., Chemistry – A European Journal 25 (43), 10165-10171 (2019). DOI: 10.1002/chem.201901650.

Photodissociation of Sodium Iodide Clusters Doped with Small Hydrocarbons

N. K. Bersenkowitsch, M. Ončák, J. Heller, C. van der Linde, and M. K. Beyer, Chemistry – A European Journal 24 (47), 12433-12443 (2018). DOI: 10.1002/chem.201803017.

Infrared spectroscopy of O˙⁻OH⁻ in water clusters: evidence for fast interconversion between O˙⁻ and OH˙ OH⁻

J. Lengyel, M. Ončák, A. Herburger, C. van der Linde, and M. K. Beyer, Physical Chemistry Chemical Physics 19 (37), 25346-25351 (2017). DOI: 10.1039/C7CP04577H.

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