New Miniaturized Spectral Measurement Platforms Covering ......UV-Visible Spectral Detector Near-Infrared Spectral Detector Mid-IR Spectral Detector Gas and Liquids (fixed wavelengths)

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New Miniaturized Spectral Measurement Platforms Covering

the Visible to the Mid-IR

John Coates Coates Consulting

IFPAC-2011, NeSSI-II, January 2011


Paradigm Shifts in Spectroscopic Measurements: Example…Spectral Sensors

Traditional spectroscopic instrumentation Original implementations tend to be large and expensive

Process analyzers are usually in large boxes Trend to point of measurement or sample…production,

process and environmental Smaller instruments favor in a distributed measurement

scheme Recent trends towards portable and handheld Current trends a good fit with enabling

technologies…such as miniaturization, MEMS, handheld computing and wireless

The “GameChangers”…spectral sensors and detectors…fully integrated devices based on solid state components


Key Enabling Technologies for Miniaturization and Low Cost

Thin film filter technologies Bandpass filters covering from deep UV (220nm) to the mid-IR

(15µm, 15,000nm) Patterned filters produced by microlithography techniques Linear variable filters – currently from the long UV (350nm) to the

mid-IR (15µm, 15,000nm) MEMS…as applied to spectroscopy

Detector arrays in the mid-IR Lasers and LEDs

Broad range of LEDs from UV (250nm) to NIR (1450nm) and out to the upper mid-IR (around 3µm)

QCL Mid-IR lasers Fiber optics

Materials available covering from far UV to mid-IR Fiber faceplates for optical interfacing and geometry conversion


New Technologies Simple Photometric Engines & Applications

UV-Visible Light Photometric Sensors Color-based measurements Fluorescence methods

Near-Infrared Photometric Sensors Solvents, oil and petroleum products Reaction monitoring – known targets Liquid products – consumer products Powders and solid substrates

Mid-Infrared Photometric Sensors Mid-IR Photometer…includes handheld diagnostic systems

Multicomponent gas analyzers Multicomponent fluid analyzers


The MicroPac: The First Commercial LVF Spectral Engine by OCLI/JDSU

The MicroPac: An integrated spectral engine… introduced in 2000/2001


An Example Miniaturized Visible LVF Spectrometer: The Mutoh MSE Module

MSE – Micro-Spectral Engine A Fully Integrated Spectrometer Module

Miniaturized Light Source Fully Integrated Module (Incandescent or LED-based)


Embedded Application for Spectral Detector Concept: SW NIR In-Line Sensing

Source MSE

Measurement Chamber

MSE Fully Integrated Microspectrometer Module

Fully Integrated Source Module (Incandescent or LED-based

Spectral range – 600nm to 1050nm

Fluid


Implementation of an Integrated NIR Spectral Sensor

Integrated System includes light sources

Reflectance mode illustrated

Reflectance Mode (Solids)

Light Sources

Integrated Electronics


Packaged Sensor with Integrated Illumination


Integrated NIR Spectral Sensor Adapted for In-Line Liquid Monitoring

Generic NeSSI

NIR NeSSI Sensor


Spectral Sensor Adapted for Transmission Measurements

Transmission Mode (Gases and Liquids)

Integrated Electronics Flow or disposable Cell

Liquids

Gases and Vapors


Example Data Spectral Sensor: Common Solvents


Mid-Infrared Spectral Sensors: Multichannel Analyzer

1 to 16 channels Filter “Mosaics”

Liquids or gases High-speed

acquisition…near realtime (0.1 second measurement cycle) for all channels

Low cost, compact


Short Path Version Multichannel Analyzer: High Concentration Gases and Liquids

Bench-top, Handheld Or Embedded Applications


Long Path Multichannel Gas Analyzer: Low Level Measurements

Bench-top, Handheld Or Embedded Applications


Stand-alone or Embedded Mid-IR LVF-Based ATR Analyzer

First in a new series Designed for

embedded, benchtop and handheld applications

Configurations: ATR Transmission

To be introduced in 2011


Keeping Spectroscopy Small, Simple…and Low Cost!

Keeping Spectroscopy Small…Palm-sized Analyzers In-line sensors Embedded spectrometers Spectral detectors

Spectroscopy Applications UV-Visible Spectral Detector Near-Infrared Spectral Detector Mid-IR Spectral Detector

Gas and Liquids (fixed wavelengths) Full spectra - MEMS-based technology

Cost effective solutions UV-Vis…target costs…$200 (volume) SW-NIR from $25 (High Volume) LW-NIR ~$1500 (Volume) IR from $1000

Documents

New Miniaturized Spectral Measurement Platforms Covering ......UV-Visible Spectral Detector Near-Infrared Spectral Detector Mid-IR Spectral Detector Gas and Liquids (fixed wavelengths)