欧兰科技 (Demo Site)-产品指南-激光器和激光光谱测量系统-可调谐激光器-NT270可调谐近红外至中红外DPSS可调谐激光器-各种激光器，光谱测量，材料应力和形变分析,CCD相机, 光学传感器，精密位移台，PIV，PLIF等- Powered By SiteEngine

Features & Applications

FEATURES

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

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

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.

Specifications

Model	NT277
OPO ¹⁾
Wavelength range ²⁾
Idler	2500 – 4475 nm
Pulse energy ³⁾
Idler	80 μJ at 3000 nm
Pulse duration ⁴⁾	5 –7 ns
Pulse repetition rate	1000 Hz
Linewidth ⁵⁾	<10 cm^-1
Tuning resolution ⁶⁾
Idler	1 cm⁻¹
Polarization	vertical
Typical beam diameter ^{7) 8)}	4 mm
PUMP LASER
Pump wavelength	1064 nm
Typical pump pulse energy ⁹⁾	1.9 mJ
Pulse duration ¹⁰⁾	<10 ns
Beam quality	fit 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 length	2.5 m
OPERATING REQUIREMENTS
Cooling	by air
Room temperature	18 – 27 °C
Relative humidity	20 – 80 % (non-condensing)
Power requirements	100 – 240 V AC, single phase 50/60 Hz
Power consumption	< 0.5 kW
Cleanliness of the room	not worse than ISO Class 9

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.
Available wavelength range. Inquire for custom IR option with tuning up to 12 µm.
See tuning curves for typical outputs at other wavelengths.
Measured art FWHM level with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
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.
For manual input from PC. When wavelength is controlled from keypad, tuning resolution is 1 nm.
Measured at the wavelength indicated in the “Pulse energy” specification row.
Beam diameter is measured at the 1/e² level at the laser output and varies depending on the wavelength.
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.
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.

Performance & Drawings

Typical output pulse energy of the NT277 and NT277-XIR tunable laser

NT277 series laser head dimensions

Publications

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5 articles, 5 selected

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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

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

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

Photodissociation of Sodium Iodide Clusters Doped with Small Hydrocarbons

Related applications: Photolysis

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