NL230
Q-scanned DPSS laser with high pulse energy
The short-pulsed nanosecond lasers of the NL230 series are diode-pumped and generate intense, brilliant pulses. They are ideal for applications such as material ablation, LIDAR, remote sensing, mass spectrometry, OPOs, Ti:sapphire or dye laser pumping and many more…
Developed and manufactured by:
Features
- Two-year warranty
- Up to 190 mJ pulse energy at 1064 nm
- Up to 100 Hz pulse repetition rate
- Short pulse duration in the range of 3-6 ns
- Temperature-stabilized frequency doubler and tripler (optional)
- Output coupler with variable reflection for low-radiation beam
- Remote control via keypad and/or any controller under any operating system via REST-API commands
- Electromechanical shutter (optional)
Applications
- LIBS (laser-induced
- plasma spectroscopy)
- Material ablation
- OPO pumps
- Remote sensing
- LIDAR (Light Detection
- and Ranging)
- Mass spectrometry
- LIF (laser-induced fluorescence)
Applications
Destruction for precise findings
Laser-induced plasma spectroscopy (LIBS) is a fast, non-destructive method for determining the elemental composition of materials. An intense laser pulse generates a plasma on the surface whose characteristic emission is analyzed. LIBS is suitable for almost all types of material – solid, liquid or gaseous – and is particularly valuable for applications where fast and spatially resolved analysis is required.
Distance as a data source
LIDAR emits short laser pulses that are scattered by particles, aerosols or molecules in the atmosphere and detected by a telescope. The distance is calculated from the travel time of the light, creating a spatial profile along the beam. LIDAR uses UV, visible or near-infrared light and is suitable for detecting a wide variety of materials – even in environments that are difficult to access.
Applications
Scientific publications
Engineering electrochemical sensors using nanosecond laser treatment of thin gold film on ITO glass
E. Stankevičius, M. Garliauskas, L. Laurinavičius, R. Trusovas, N. Tarasenko, and R. Pauliukaitė, Electrochimica Acta 297, 511-522 (2019). DOI: 10.1016/j.electacta.2018.11.197.
Direct generation of gold nanoparticles on ITO glass using a nanosecond laser is presented and the electrochemical properties of the gold modified ITO electrodes for detection of the ascorbic acid are analyzed. Gold nanoparticles were generated by nanosecond laser pulse irradiation of thin, 3-30 nm thick, gold films. It was found that diameters and the number of generated nanoparticles per unit area strongly depends on the thickness of the gold film when it is less than 10 nm. Furthermore, experiments have shown that the influence of laser processing parameters (the laser pulse energy and pulse number) to the size, the distribution and the area density of generated gold nanoparticles on ITO glass is negligible. Characterization of the electrochemical properties of the gold modified ITO electrodes by nanosecond laser showed that the fabricated electrodes could be employed in electrochemical sensing. Therefore, the demonstrated generation of gold nanoparticles on ITO by using the nanosecond laser approach opens new opportunities for the development of highly sensitive and low-cost electrochemical sensors.
Photoacoustic/Ultrasound/Optical Coherence Tomography Evaluation of Melanoma Lesion and Healthy Skin in a Swine Model
K. Kratkiewicz, R. Manwar, A. Rajabi-Estarabadi, J. Fakhoury, J. Meiliute, S. Daveluy et al, Sensors 19 (12), 2815 (2019). DOI: 10.3390/s19122815.
The marked increase in the incidence of melanoma coupled with the rapid drop in the survival rate after metastasis has promoted the investigation into improved diagnostic methods for melanoma. High-frequency ultrasound (US), optical coherence tomography (OCT), and photoacoustic imaging (PAI) are three potential modalities that can assist a dermatologist by providing extra information beyond dermoscopic features. In this study, we imaged a swine model with spontaneous melanoma using these modalities and compared the images with images of nearby healthy skin. Histology images were used for validation.
Enhancement of Laser-Induced Breakdown Spectroscopy (LIBS) Detection Limit Using a Low-Pressure and Short-Pulse Laser-Induced Plasma Process
Z. Z. Wang, Y. Deguchi, M. Kuwahara, J. J. Yan, and J. P. Liu, Applied Spectroscopy 67 (11), 1242-1251 (2013). DOI: 10.1366/13-07131.
Laser-induced breakdown spectroscopy (LIBS) technology is an appealing technique compared with many other types of elemental analysis because of the fast response, high sensitivity, real-time, and noncontact features. One of the challenging targets of LIBS is the enhancement of the detection limit. In this study, the detection limit of gas-phase LIBS analysis has been improved by controlling the pressure and laser pulse width. In order to verify this method, low-pressure gas plasma was induced using nanosecond and picosecond lasers. The method was applied to the detection of Hg. The emission intensity ratio of the Hg atom to NO (IHg/INO) was analyzed to evaluate the LIBS detection limit because the NO emission (interference signal) was formed during the plasma generation and cooling process of N2 and O2 in the air. It was demonstrated that the enhancement of IHg/INO arose by decreasing the pressure to a few kilopascals, and the IHg/INO of the picosecond breakdown was always much higher than that of the nanosecond breakdown at low buffer gas pressure. Enhancement of IHg/INO increased more than 10 times at 700 Pa using picosecond laser with 35 ps pulse width. The detection limit was enhanced to 0.03 ppm (parts per million). We also saw that the spectra from the center and edge parts of plasma showed different features. Comparing the central spectra with the edge spectra, IHg/INO of the edge spectra was higher than that of the central spectra using the picosecond laser breakdown process.