Nanosecond laser system NL300

Q-switchedtunablelaboratory

The NL300 series are compact flash-lamp pumped, electro-optically Q-switched nanosecond Nd:YAG lasers designed to deliver high energy pulses with durations of 3–6 ns at repetition rates up to 20 Hz. These lasers are recognized for their reliability and rugged sealed laser cavity, making them suitable for demanding scientific and industrial applications. The NL300 series offers a wide range of harmonic generator modules, enabling wavelength generation up to the 5th harmonic, and features optional attenuators for both fundamental and harmonic wavelengths. The system supports water-to-water or water-to-air cooling, and allows for flashlamp replacement without misalignment of the laser cavity. Remote control is possible via keypad and/or RS232/USB port, with LabView™ drivers included for easy integration.

Features

• Customers recognized reliability
• Two years warranty
• Rugged sealed laser cavity
• Up to 1100 mJ pulse energy
• Better than 1% StDev pulse energy stability
• 5–20 Hz pulse repetition rate
• 3–6 ns pulse duration
• Thermo stabilized second, third, fourth and fifth harmonic generator modules
• Optional attenuators for fundamental and/or harmonic wavelengths
• Water-to-water or water-to-air cooling options
• Replacement of flashlamps without misalignment of laser cavity
• Remote control via keypad and/or RS232/USB port

Applications

• Material ablation
• LIBS (Light Induced Breakdown Spectroscopy)
• OPO pumping
• Remote Sensing
• LIDAR (Light Detection And Ranging)
• Mass Spectroscopy
• LIF (Light Induced Fluorescence)

Description
NL300 series lasers produce high energy pulses with selectable repetition rates from 5 to 20 Hz. The NL30×HT models are optimized for maximum energy extraction, delivering up to 1100 mJ at 5 Hz. The compact laser head (approx. 480 mm long) and power supply (330 × 490 mm footprint) are designed for easy integration and maintenance, with convenient access to the water tank and flashlamp replacement that does not require realignment. The system can be configured with water-to-water or water-to-air heat exchangers, allowing operation without tap water if needed. Control is available via LabView™ drivers or a remote pad.

Benefits

• High pulse energy (up to 1100 mJ at 1064 nm, 700 mJ at 532 nm, 450 mJ at 355 nm) and short pulse duration (~4 ns) for strong material interaction, ideal for LIBS and ablation
• Cost-effective, single-cavity design with no amplifiers for easy alignment, high reliability, and low maintenance
• Compact size saves laboratory space
• Fast flashlamp replacement without realignment
• Air cooling option for simple installation and low maintenance
• Multiple interfaces: USB, RS232, optional LAN and WLAN for easy integration

Options

• -AW: Air-cooled power supply option (requires stable room temperature)
• Harmonic generator: Selection up to 5th harmonic
• Attenuator: Smoothly adjusts pulse energy without affecting other parameters

Harmonic Generators & Attenuators

• Compact, thermo-stabilized modules with dichroic mirrors and AR coatings
• Phase matching by mechanical adjustment
• High conversion efficiency and wide configuration selection
• Modular design allows reconfiguration for different wavelengths
• Attenuators integrated for smooth energy adjustment

Typical Harmonic Modules

• H300A: Attenuator for 1064 nm beam
• H300SH: Second harmonic generator (1064/532 nm)
• H300S: 532 nm beam separator
• H300SHC: Second harmonic generator with 532 nm beam separator
• H300SHA: Second harmonic generator, beam separator, and attenuator for 532 nm
• H300THC: Third harmonic generator with 355 nm beam separator
• H300THA: Third harmonic generator, beam separator, and attenuator for 355 nm
• H300FHC: Fourth harmonic generator with 266 nm beam separator
• H300FHA: Fourth harmonic generator, beam separator, and attenuator for 266 nm
• H300FiHC: Fifth harmonic generator with 213 nm beam separator

Specifications (selected)

• Pulse repetition rate: 5–20 Hz (model dependent)
• Pulse energy (at 1064 nm): up to 1100 mJ
• Pulse energy (at 532 nm): up to 700 mJ
• Pulse energy (at 355 nm): up to 450 mJ
• Pulse energy (at 266 nm): up to 120 mJ
• Pulse energy (at 213 nm): up to 25 mJ
• Pulse energy stability (StdDev): 1.0% (1064 nm), 1.5% (532 nm), 3.0% (355 nm), 3.5% (266 nm), 6.0% (213 nm)
• Power drift: ±2%
• Pulse duration: 3–6 ns
• Polarization: vertical, >90%
• Optical pulse jitter (StdDev): <0.5 ns
• Linewidth: <1 cm⁻¹
• Beam profile: Hat-Top in near, near Gaussian in far fields
• Typical beam diameter: ~8–10 mm
• Beam divergence: <0.6 mrad
• Beam pointing stability (RMS): 50 µrad
• Beam height: 68 mm
• Laser head size (W × L × H): 154 × 475 × 128 mm
• Power supply unit (W × L × H): 330 × 490 × 585 mm
• Umbilical length: 2.5 m
• Water consumption: <6–12 l/min (model dependent)
• Ambient temperature: 15–30 °C
• Relative humidity: 20–80% (non-condensing)
• Power requirements: 208–240 V AC, single phase, 50/60 Hz
• Power consumption: <1–1.5 kVA
• Room cleanliness: not worse than ISO Class 9