 |
|
|
|
|
LIBS2500 Spectrometer &
Accessories |
|
|
|
Instant
Elemental Analysis from 200-980 nm
We offer a full range of
systems and components for laser-induced breakdown
spectroscopy, a noninvasive technique for real-time,
qualitative and semi-quantitative spectral analysis
of elements in
solids, solutions and gases. The LIBS2500-7 is a
broadband (200-980 nm), high-
resolution detection
system with optical resolution of ~0.1 nm (FWHM).
Sensitivity to parts-per-billion and picogram levels
is possible.
How the LIBS Systems Work
A high-intensity, pulsed
laser beam is focused on the sample area. A single
10 nanosecond-wide laser pulse ablates the sample
and generates plasma. As the plasma
decays or cools,
excited atoms in the plasma emit light at
wavelengths distinct to each element. The emission
is collected by a probe and sent to the spectrometer
system. The system
provides full
spectral analysis in less than a second. OOILIBS
Operating Software includes a library of elemental
emission lines and enables automatic identification
of all elements present in the sample.
High-resolution Spectrometers
Our LIBS2500-7
Spectrometer System uses seven linear CCD-array
detectors for broadband 200-980 nm analysis. All
spectrometers are triggered to acquire and read out
data simultaneously. The detection system can be
portable and is interfaced to a PC via a USB port.
As lower-cost options, LIBS2500 Systems are
available with fewer than seven channels (see table
below), with a narrower wavelength range for
element-specific analyses. Depending on the range of
your analyses, you may require a system with less
than seven channels at a significantly lower cost.
LIBS2500 Uses in Diverse Applications
-
�
- Environmental:
soil, particulates, sediments
- �
- Materials
Analysis: metals, slag, plastics, glass
- �
- Forensics &
Biomedical: teeth, bones
- �
- Metrology:
silicone wafers, semiconductor materials
- �
- Bioresearch:
plants, grains
- �
- Safety &
Military: explosives, chemical and biological
warfare agents
- �
- Art Restoration
& Conservation: pigments, paints
- �
- Gemology &
Metallurgy: precious metals, gems
|
|
Above is a
LIBS2500-7 Spectrometer System with a
LIBS-BUN-7 Fiber Bundle. This seven channel
spectrometer system provides elemental analysis from 200-980 nm. A
LIBS2500 system requires a laser to ablate the sample (see page 49) and
a sampling system, such as our LIBS-SC Sample Chamber, to collect the
emitted ligth
Specification
Dimensions: 33.4 cm X 15 cm x 14 cm maximum
(spectrometer system)
Weight:
6.4 kg (spectrometer system only)
Power
consumption: 1 A @ 5 VDC (spectrometer system only)
Detector: (7) 2048-element linear silicon CCD arrays
Wavelength range: Channel dependent
Optical
resolution: ~0.1 nm (FWHM)
Frame
rate: 10 Hz capability (PC-controlled)
Integration time: 2.1 ms; variable in free-run mode
Trigger
delay: -121 µs to +135 µs in 500 ns steps
(PC-controlled)
Trigger
jitter: ± 250 nanoseconds (± 20 nanoseconds
optional)
Trigger
level: TTL not to exceed 5.5 volts
* For
seven-channel LIBS2500-7 system.
 
Ordering a LIBS2500
System is easy.
Components are
offered
to give you maximum
flexibility so that
you order only what
you need. Select the
Spectrometer
Channels (LIBS-CH-X)
for
your LIBS2500 System
depending on the
wavelength ranges
needed for your
application.
Channels (A, B, C,
etc.) do not
have to be
consecutive. You
will also need to
specify the fiber
bundle that
corresponds to the
number of channels
being
ordered. For
additional
accessories, see the
following page |
|
|
Additional LIBS Components |
LIBS Sample
Chamber
The LIBS-SC Sample Chamber is a key component of
a LIBS system and is designed to perform various
functions safely and in clear view of the sample.
The LIBS-SC has an eyewear-safe enclosure. The
chamber has a safety-interlock so the laser will not
fire when the door is open. It houses a manually
controlled x-y-z stage and provides illumination for
the optional LIBS-IM-USB Imaging Module. The LIBS-SC
has an inert gas induction port and a suction nozzle
to remove particulates. In addition, you have the
ability to
|
|
T he
LIBS-SC includes an evacuation
system that removes material from the
sample area. You also can feed gases such
as argon into the chamber. Flooding the
chamber with an inert gas provides greater
sensitivity for many elements.
Specification
Stages: Manual x-y-z
stage
focus the laser to a
40 µm spot size. The
Sample size: 6.5 cm
x 6.5 cm x 4 cm max.
sample chamber is
designed for use with the
Laser safety shield:
OD 6 for 1.064 mm laser Big Sky Lasers we resell
(see below for laser energy (call for other
wavelengths)
details). If you
wish to use the LIBS-SC with a
Internal optics: 25
mm diameter focusing lens,
different laser,
please contact Ocean Optics.
75 mm focal length
supplied LIBS-SC: $9,800 Ablation spot size:
approximately 40 µm
|
|
|
LIBS Imaging Module for Pinpoint
Analysis |
|
|
This image is the "O" in the
text “Quarter Dollar” on a U.S.
coin.
The LIBS-IM-USB Imaging Module
directly attaches to the LIBS-SC Sample Chamber to enable users to
magnify a sample image and to establish a laser ablation target on the
sample. The camera is also useful when you want to adjust the laser
focus at the surface of the sample, or above or below the sample
surface. When used with the LIBS-SC and laser, the LIBS-IM-USB and laser
are in the same focal plane enabling precise, rapid and convenient laser
focus.
The USB-enabled color camera captures pre- and
post-ablation images of the sample and provides up to 1280 x 1024 pixel
resolution.
LIBS-IM-USB: Call for Price |
|
Specification
Interface: USB 2.0 (480
Mb/sec)
Power: USB 5 VDC, max. 180 mA
Frame size: 1280 x 1024, 640 x 480, 320 x 240,
160 x 120
Data output: RGB 24 bit
Requirements: -- Windows XP Professional SP1
-- Support of Direct X
-- Driver compatible Windows driver
model (WDM)
-- SDK iREZ WDM library
-- 3.2 GHz or higher processor
-- 1 GB recommended memory
-- 10 GB free hard disk space
-- Rocket-fast GeForce 4200Ti or
better video card recommended
|
|
|
LIBS Laser Options
We offer two LIBS25000 laser power options from industry leader Big Sky Laser Technologies. Laser ablation and plasma formation are very specific to the sample matrix, and therefore the power requirements will vary by sample type. For most applications we employ a Q-switched 1064 nm Nd:YAG laser, and for maximum versatility, we recommend a 200 mJ laser with attenuator to adjust the laser power according to the sample matrix. The choice of laser power and wavelength depend on the material being analyzed and the sample’s tolerable damage threshold. The LIBS-LASER is a 50 mJ CFR Nd:YAG laser for metal and thin film samples. The LIBS-LAS200MJ is a 200 mJ CFR Nd:YAG laser for most all other materials.
LIBS-LASER: Call fro Price LIBS-LAS200MJ: Call fro Price
|
|
|
LIBS-ELITE Laser Ablation System |
|
|
Highly Refined Sampling System for LIBS
Laser-induced Breakdown
Spectroscopy is a noninvasive technique for
real-time, qualitative and semi-quantitative
spectral analysis of elements in solids, solutions
and gases. The LIBS-ELITE, developed by New Wave
Research and Ocean Optics, is a high-quality LIBS
sampling system with unparalleled sample imaging and
control. The LIBS-ELITE consists of a laser head,
sample chamber, software-controlled X-Y positioner
and a high-resolution imaging system in a single
housing. New Wave Research developed the LIBS-ELITE
to work with the LIBS2500 System (page 48).
200 mJ Nd:YAG Laser
The LIBS-ELITE-200 comes
with New Wave Research's Tempest 200 mJ Nd:YAG
laser. The Tempest delivers high-energy densities to
the sample to create plasma from even the most
challenging materials. The accuracy and precision of
the system results from the 98% pulse-to-pulse
stability of the Tempest. A laser power meter
located adjacent to the sample and a
software-controlled attenuator are standard features
that help enable quantitative sample analysis.
Another laser option is available; the LIBS-ELITE-90
comes with a 90 mJ laser.
Sample Chamber: Unprecedented Control
The open architecture of
the sample chamber allows the sample and ablation
plume to be viewed easily through its Class 1
shield. The sample chamber includes a quick-loading
sample drawer, and can accommodate samples up to two
inches in diameter. A gas port on the rear of the
housing enables the chamber to be purged with argon,
which is useful for increasing sampling sensitivity,
or with nitrogen or helium, which is useful when
measuring emissions of elements such as oxygen that
are found in ambient environments. An integrated
rotometer regulates the gas flow in the chamber.
Exact Positioning & High-resolution Imaging
The ELITE's
software-controlled X-Y stage allows you to
precisely control the target location, to create
reproducible maps, and to automate sample mapping,
patterning and rastering for testing sample
homogeneity or for bulk analysis. The spot size
controller sets the ablation spot size from 20 µm to
1200 µm. The LIBS-ELITE’s high-resolution sample
magnification capability (see software screen
capture at right) allows you to view an exact spot
before and after the ablation event.
Software with Spectral Library
The LIBS-ELITE comes
with intuitive operating software and a library of
elemental emission lines, which enables automatic
identification of all elements present in a sample.
The software includes controls for ablation mode,
laser repetition rate, laser power, sample spot size
selection, X-Y positioning, sample viewing, sample
mapping, gas routing, spectrometer system triggering
and automating sampling processes.
|
|
The LIBS-ELITE
works with the
Ocean Optics LIBS2500-7
Spectrometer System (see page 48) to provide full spectral analysis from
200-980 nm, with optical resolution of 0.1 nm and sensitivity to parts-perbillion.
Below is a magnification of the sampling area where the ablation plume
is produced behind an orange Class 1 shield. The sample compartment
itself contains a quarter.
View an exact spot of the sample
before, during and after the ablation process. The LIBS-ELITE provides
real-time, high-resolution qualitative analysis of trace elements in
diverse materials such as metals, biological tissues, soils, optics,
semiconductors, gems and other geological, biological and environmental
specimens. |
|
|
|
|
|
|
|
|
Special
Instrument
