Pulsed laser system NT240

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The NT240 series are broadly tunable kHz pulsed DPSS lasers designed for advanced laboratory applications requiring hands-free, no-gap wavelength tuning from 210 to 2600 nm in a single compact housing. With a 1000 Hz repetition rate, these lasers are ideal for laser-induced fluorescence, flash photolysis, photobiology, metrology, and remote sensing. The system integrates a DPSS pump laser and OPO, offering high reliability and minimal maintenance due to its diode-pumped design and built-in air-cooled chiller. Remote control is possible via keypad or PC, with LabVIEW™ drivers provided for easy integration and parameter adjustment. The NT240 series features a built-in OPO pump energy monitor and optional separate output ports for 1064, 532, or 355 nm beams.

Features

• Customers recognized reliability
• Two years warranty
• Integrates DPSS pump laser and OPO into a single housing
• Hands-free no-gap wavelength tuning from 210 to 2600 nm (automatic wavelength scan programmable)
• 1000 Hz pulse repetition rate
• More than 60 µJ output pulse energy in UV
• Less than 5 cm^‑1 linewidth
• 3–6 ns pulse duration
• Remote control via key pad or PC
• Optional separate output for the OPO pump beam 355 nm, 532 nm or 1064 nm

Applications

• Laser-induced fluorescence spectroscopy
• Pump-probe spectroscopy
• Non-linear spectroscopy
• Time-resolved spectroscopy
• Photobiology
• Remote sensing
• Determination of the telescope throughput

Description
NT240 series lasers produce pulses at an unprecedented 1 kHz pulse repetition rate, tunable over a broad spectral range. Integrated into a single compact housing, the diode pumped Q-switched Nd:YAG laser and OPO offers hands‑free, no-gap tuning from 210 to 2600 nm. The system can be controlled from a remote control pad or computer using supplied LabVIEW™ drivers, with a backlit display for easy reading even with laser safety eyewear. The DPSS pump source ensures low maintenance, and the built-in chiller reduces running costs. A built-in OPO pump energy monitor allows monitoring of pump laser performance without external power meters. Optional features include a separate output port for the 1064, 532, or 355 nm beam.

Benefits

• Hands-free wavelength tuning – no need for physical intervention
• High repetition rate 1000 Hz enables fast data collection
• End pumping with diode technology ensures high reliability and low maintenance costs
• Narrow linewidth (down to 3 cm^‑1) and superior tuning resolution (1–2 cm^‑1) allow recording of high quality spectra
• High integration level saves valuable space in the laboratory
• 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
• Attenuator and fiber coupling options facilitate incorporation of NT240 systems into various experimental environments

Accessories and optional items

• -SH: Tuning range extension in UV range (210–300 nm) by second harmonic generation
• -SF: Tuning range extension in 300–405 nm range by sum-frequency generation
• -SH/SF: Tuning range extension in 210–405 nm range by combining second harmonics and sum-frequency generator outputs for maximum possible pulse energy
• -SCU: Spectral filtering accessory for improved spectral purity of pulses
• -H, -2H, -3H: 1064, 532 and 355 nm output via separate port
• -FC: Fiber coupler
• -ATTN: Attenuator option

Specifications

• Model: NT242, NT242-SH, NT242-SF, NT242-SH/SF
• OPO Wavelength range: Signal 405–710 nm, Idler 710–2600 nm
• SH and SF: 210–300 nm (SH), 300–405 nm (SF), 210–405 nm (SH/SF)
• Pulse energy: OPO 450 μJ; SH and SF up to 60 μJ at 320 nm
• Pulse repetition rate: 1000 Hz
• Pulse duration: 3–6 ns (OPO), 4–6 ns at 1064 nm (pump)
• Linewidth: <5 cm^‑1 (OPO), <8 cm^‑1 for 210–405 nm
• Minimal tuning step: 1 cm^‑1 (signal/idler), 2 cm^‑1 (SH/SF)
• Polarization: Signal horizontal, Idler vertical, SH/SF vertical
• Typical beam diameter: 3 × 6 mm
• Pump wavelength: 355 nm (NT242, NT242-SH), 355/1064 nm (NT242-SF, NT242-SH/SF)
• Typical pump pulse energy: 3 mJ (NT242, NT242-SH), 3/1 mJ (NT242-SF, NT242-SH/SF)
• Unit size (W × L × H): 456 × 1040 × 297 mm
• Power supply size (W × L × H): 520 × 400 × 286 mm
• Umbilical length: 2.5 m
• Cooling: built-in chiller
• 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