ANL SLM series

Single Mode (SLM) High Energy Q-switched Nd:YAG Lasers
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  • Diode-pumped, self-seeded Single Longitudinal Mode (SLM) master oscillator
  • Up to 10 J pulse energies
  • 2 – 25 ns pulse durations
  • 10 Hz pulse repetition rate
  • Diode-pumped, self-seeded Single Longitudinal Mode (SLM) master oscillator
  • Up to 10 J pulse energies
  • 2 – 25 ns pulse durations
  • 10 Hz pulse repetition rate

Features & Applications

Features

  • Up to 10 J pulse energies
  • 2 – 25 ns pulse durations
  • 10 Hz pulse repetition rate
  • Diode-pumped, self-seeded Single Longitudinal Mode (SLM) master oscillator
  • Stable master oscillator cavity producing TEM₀₀ spatial mode output
  • Excellent pulse energy stability
  • Cost effective flash lamp pumped power amplifier
  • Standard 2 ns pulse duration (2 – 25 ns are optional)
  • Temperature stabilized harmonics generator options
  • Control through keypad, USB and LAN interfaces with supplied Windows control software (RS232 as optional)

Applications

  • Material processing
  • OPO, OPCPA, Ti:Sapphire, dye laser pumping
  • Holography
  • Nonlinear laser spectroscopy
  • Optics testing

Description

ANL SLM series electro-optically Q-switched nanosecond Nd:YAG lasers deliver up to 10 J per pulse with excellent stability. These systems are an excellent choice for many applications, including OPO, OPCPA or dye laser pumping, holography, LIF spectroscopy, remote sensing, optics testing and other tasks.

The innovative, diode‑pumped, self‑seeded master oscillator design results in Single Longitudinal Mode (SLM) output without the use of external expensive narrow linewidth seed diodes and cavity‑locking electronics. Unlike more common designs that use an unstable laser cavity, the stable master oscillator cavity produces a TEM₀₀ spatial mode output that results in excellent beam properties after the amplification stages. For tasks that require a smooth and as close as possible to the Gaussian beam profile, models with improved Gaussian fit are available.

ANL series linear amplifiers are cost effective solution for high energy nanosecond systems. Advanced beam shaping ensures smooth, without hot spots beam spatial profile at the laser output. Low light depolarization level allows high efficiency generation of up to 4th harmonic with optional build-in harmonic generators. The simple and field proven design ensures easy maintenance and reliable long-term operation of the ANL SLM series laser.

Angle-tuned non-linear crystals harmonic generators mounted in temperature stabilized heaters are used for second, third and fourth harmonic generation. Harmonic separation system is designed to ensure high spectral purity of radiation and direct it to the output ports. Harmonic generators can be integrated into laser head or placed outside laser head into auxiliary harmonic generator module. Output wavelength switching is done manually. Motorized wavelength switching is available by request.

The low jitter of the optical pulse with respect to the Q-switch triggering pulse allows the reliable synchronization between the laser and external equipment.

System control is available through control pad, USB and LAN interfaces (RS232 as optional). The system can be controlled from personal computer with supplied software for Windows operating system.

Specifications

Model ANL2k10-SLMANL5k10-SLMANL10k10-SLM
MAIN SPECIFICATIONS 1)
Output energy
    at 1064 nm2000 mJ5000 mJ10000 mJ
    at 532 nm 2) 3)1000 mJ2500 mJ5000 mJ
    at 355 nm 2)450 mJ1300 mJ2500 mJ
    at 266 nm 2)140 mJ750 mJ1500 mJ
Pulse repetition rate10 Hz
Pulse duration 4)2 ± 0.5 ns
Pulse energy stability 5)
    at 1064 nm≤ 1 %
    at 532 nm≤ 2 %
    at 355 nm≤ 3 %
    at 266 nm≤ 4 %
Long-term power drift 6)± 2 %
Beam spatial profile 7)Super-Gaussian
8)4.46.69.2
Beam diameter 9)~12 mm~18 mm~25 mm
Beam pointing stability 10)≤ 25 µrad
Beam divergence≤ 0.5 mrad
Optical pulse jitter 11)≤ 0.2 ns
Linewidth≤ 0.01 cm⁻¹ (SLM)
Polarizationlinear, >90 %
PHYSICAL CHARACTERISTICS 12)
Laser head size (W×L×H mm)455 × 1220 × 270600 × 1500 × 300600 × 2000 × 300
Power supply size (W×L×H mm)550 × 600 × 1030550 × 600 × 1030 – 2 units550 × 600 × 1650 – 2 units
Umbilical length 13)5 m
OPERATING REQUIREMENTS 14)
Power requirements 15)208, 380 or 400 V AC, three phase, 50/60 Hz
Power consumption 16)≤ 5 kVA≤ 6 kVA≤ 8 kVA
Water supply 16)≤ 5 l/min, 2 Bar, max 15 °C≤ 7 l/min, 2 Bar, max 15 °C≤ 10 l/min, 2 Bar, max 15 °C
Operating ambient temperature22 ± 2 °C
Storage ambient temperature15 – 35 °C
Relative humidity (non-condensing)≤ 80 %
Cleanness of the roomISO Class 7
  1. Due to continuous improvement, all specifications are subject to change without notice. The parameters marked ‘typical’ are indications of typical performance and will vary with each unit we manufacture. Presented parameters can be customized to meet customer‘s requirements. All parameters measured at 1064 nm if not stated otherwise.
  2. Harmonic outputs are optional. Specifications valid with respective harmonic module purchased. Outputs are not simultaneous.
  3. Second harmonic is available with LBO crystal then the conversion efficiency is increased to 70%. If TH/FH options are ordered second harmonic efficiency is reduced to ~50 %.
  4. Standard pulse duration is 2 ns. Other pulse durations can be ordered within range of 2 – 25 s. Output energy might differ depending on duration.
  5. Under stable environmental conditions, normalized to average pulse energy (RMS, averaged from 60 s).
  6. Measured over 8 hours period after 30 min warm-up when ambient temperature variation is less than ±2 °C.
  7. Super-Gaussian spatial mode of 6-11th order in near field.
  8. The stated M² values are calculated using beam parameters. Actual measured value might differ.
  9. Beam diameter is measured at signal output at 1/e2 level for Gaussian beams and FWHM level for Super-Gaussian beams.
  10. Beam pointing stability is evaluated as movement of the beam centroid in the focal plane of a focusing element (RMS, averaged from 60 s).
  11. Optical pulse jitter with respect to electrical outputs: Trig out > 3.5 V @ 50 Ω.
  12. System sizes are preliminary and depend on customer lab layout and additional options purchased.
  13. Longer umbilical with up to 10 m available upon request.
  14. The laser and auxiliary units must be settled in such a place void of dust and aerosols. It is advisable to operate the laser in air conditioned room, provided that the laser is placed at a distance from air conditioning outlets. The laser should be positioned on a solid worktable. Access from one side should be ensured.
  15. Voltage fluctuations allowed are +10 % / -15 % from nominal value.
  16. Power consumption and water supply requirements deviate depending on system configuration.

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.

Options

OptionDescriptionComment
-GProvides a Gaussian-like beam profileReduces the output energy of fundamental by ~80 %
- AWWater-air cooling optionReplaces or supplements Water-to-Water cooling unit. Heat dissipation equals total power consumption
- N2…N25Longer pulse duration optionIn the range of 2 – 25 ns

Performance

Drawings & Images

Power Supply

CabinetUsable heightHeight H, mmWidth W, mmDepth D, mm
MR-99 U455.5 (519 1) )553600
MR-1212 U589 (653 1) )553600
MR-1616 U768 (832 1) )553600
MR-2020 U889 (952 1) )553600
MR-2525 U1167 (1231 1) )553600
MR-3434 U1640 (1709 1) )553600
  1. Full height with wheels.

Publications

Found total :
2 articles, 2 selected
Application selected :
All Applications
All Applications
Scientific Applications
High Intensity Sources – laser produced plasma, x-ray source, extreme UV
Laser Spectroscopy
LIBS – laser induced breakdown spectroscopy

Development and characterization of a laser-plasma soft X-ray source for contact microscopy

Related applications:  High Intensity Sources

Authors:  M.G. Ayele, P.W. Wachulak, J. Czwartos, D. Adjei, A. Bartnik, Ł. Wegrzynski, M. Szczurek, L. Pina, H. Fiedorowicz

In this work, we present a compact laser-produced plasma source of X-rays, developed and characterized for application in soft X-ray contact microscopy (SXCM). The source is based on a double stream gas puff target, irradiated with a commercially available Nd:YAG laser, delivering pulses with energy up to 740 mJ and 4 ns pulse duration at 10 Hz repetition rate. The target is formed by pulsed injection of a stream of high-Z gas (argon) into a cloud of low Z-gas (helium) by using an electromagnetic valve with a double nozzle setup. The source is designed to irradiate specimens, both in vacuum and in helium atmosphere with nanosecond pulses of soft X-rays in the ‘‘water-window” spectral range. The source is capable of delivering a photon fluence of about 1.09 x 103 photon/µm2/pulse at a sample placed in vacuum at a distance of about 20 mm downstream the source. It can also deliver a photon fluence of about 9.31 x 102 - photons/µm2/pulse at a sample placed in a helium atmosphere at the same position. The source design and results of the characterization measurements as well as the optimization of the source are presented and discussed. The source was successfully applied in the preliminary experiments on soft X-ray contact microscopy and images of microstructures and biological specimens with ~80 nm half-pitch spatial resolution, obtained in helium atmosphere, are presented.

Published: 2017.   Source: Nuclear Instruments and Methods in Physics Research B 411 (2017) 35–43

Enhancement of Laser-Induced Breakdown Spectroscopy (LIBS) Detection Limit Using a Low-Pressure and Short-Pulse Laser-Induced Plasma Process

Related applications:  Laser Spectroscopy LIBS

Authors:  Z. Zhen Wang, Y. Deguchi, M. Kuwahara, J. Jie Yan, J. Ping Liu

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.

Published: 2013.   Source: Applied Spectroscopy 67(11):1242-51

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