Nanosecond laser system NT250

solid-stateUVtunable

The NT250 series is a tunable wavelength UV-NIR range DPSS laser system designed for high reliability and advanced scientific applications. It delivers hands-free, no-gap tuning from 335 to 2600 nm in a single compact housing, integrating a nanosecond Optical Parametric Oscillator (OPO) and a Diode-Pumped Solid-State (DPSS) Q-switched pump laser. With a 1000 Hz repetition rate and more than 1.1 mJ output pulse energy in the NIR, the NT250 series is ideal for applications such as photoacoustic imaging and laser-induced fluorescence spectroscopy.

Features

• Customers recognized reliability
• Two years warranty
• Integrates DPSS pump laser and OPO into a single housing
• Dry, no water inside
• Hands-free no-gap wavelength tuning from 335 to 2600 nm (automatic wavelength scan is programmable)
• 1000 Hz pulse repetition rate
• More than 1.1 mJ output pulse energy in NIR
• 1–4 ns pulse duration
• Remote control via key pad or PC

Applications

• Photoacoustic imaging
• Laser-induced fluorescence spectroscopy
• Pump-probe spectroscopy
• Photobiology
• Remote sensing
• Metrology

Description
NT250 series tunable laser systems integrate a nanosecond OPO and DPSS Q-switched pump laser into a single compact housing. Diode pumping enables fast data acquisition at high pulse repetition rates up to 1 kHz, avoiding frequent flashlamp changes. Special cooling technology eliminates the need for tap water, reducing running and maintenance costs. All lasers feature motorized tuning across the specified range, with output wavelength settable from a control pad with a backlit display or from a PC using LabVIEW™ drivers. High conversion efficiency, stable output, easy maintenance, and compact size make these systems an excellent choice for many applications.

Benefits

• Hands-free wavelength tuning – no need for physical intervention
• High repetition rate (1000 Hz) enables fast data collection
• End diode pumping and water-free technology ensure high reliability and low maintenance costs
• Superior tuning resolution (1–2 cm⁻¹) allows recording of high quality spectra
• High integration level saves valuable laboratory space
• 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 for easy control and integration
• Attenuator and fiber coupling options facilitate incorporation into various experimental environments

Accessories and Optional Items

• -SH: Tuning range extension in UV range (335–670 nm) by second harmonic generation
• -H, -2H: 1064 and 532 nm output via separate port
• -FC: Fiber coupled output in 350–2000 nm range
• -ATTN: Attenuator output in 335–2600 nm range

Characteristics / Technical Specifications

• Model: NT252 (part of NT250 series)
• OPO Specifications:
• Wavelength range: Signal 670–1064 nm, Idler 1065–2600 nm, SH 335–669 nm
• Pulse energy: OPO 1100 μJ, SH 200 μJ
• Pulse repetition rate: 1000 Hz
• Pulse duration: 1–4 ns
• Linewidth: < 10 cm⁻¹
• Minimal tuning step: Signal 1 cm⁻¹, Idler 1 cm⁻¹, SH 2 cm⁻¹
• Polarization: Signal horizontal, Idler vertical, SH horizontal
• Typical beam diameter: 3 × 6 mm
• Pump Laser:
• Pump wavelength: 532 nm
• Typical pump pulse energy: 4 mJ
• Pulse duration: 2–5 ns
• Pulse energy stability (StdDev): < 2.5 %
• Physical Characteristics:
• Unit size (W × L × H): 456 × 1040 × 297 mm
• Power supply size (W × L × H): 520 × 400 × 286 mm
• Umbilical length: 2.5 m
• Operating Requirements:
• Cooling: air-cooled
• Room temperature: 18–27 °C
• Relative humidity: 20–80 % (non-condensing)
• Power requirements: 100–240 V AC, single phase, 50/60 Hz
• Power consumption: < 1.5 kW
• Cleanliness of the room: not worse than ISO Class 9