Accessories for Oriel MIR8025 FT Spectrometers

Transcription

1 1332 MONOCHROMATORS Accessories for Oriel MIR8025 FT Spectrometers Versatile, modular accessories Convenient bench holding/coupling accessory Fiber coupling accessories simplifying beam collection and delivery SPECTROGRAPHS ARRAY Bench Accessory coupled to output of MIR 8025 Scanner. An MCT Detector is at the output of the Here we describe various accessories, which complement the modular design of the MIR8025 TM Spectrometers. These accessories simplify measurements; they include: Bench Accessory IR Fibers and Fiber Coupling Accessories IR Sources Collecting Optics Bench Accessory ARBITRARY UNITS WAVENUMBERS (cm -1 ) The Accessory Bench holds FT-IR sampling accessories, at the proper optical height between the MIR 8025 Scanner and Detector. Use it with any MIR 8025 Detector. The SiC Source, QTH Source, or your own source, is needed at the input of the Scanner, to complete the system. Fig. 1 Spectrum of QTH Source taken by MIR8025 TM with a CaF 2 beam splitter and DTGS Detector MINIS IR Fibers and Fiber Coupling Accessories To carry the modulated output from the MIR8025 Scanner to a sample, or to carry sample radiation to the MIR8025, we offer two fiber coupling accessories and various IR single core fibers. The Fiber Coupler has an SMA fiber connector and a collecting mirror; it accepts SMA terminated fibers. The is similar to the but has X-Y translation for precise coupling, and does not include the fiber termination. Choose between the SMA, ST and mm Oriel ferrule, to complete the Fiber Coupling Accessory. ARBITRARY UNITS WAVENUMBERS (cm -1 ) FT-IR S On page 320, we offer Chalcogenide and Polycrystalline Fibers in 250 to 900 mm core diameters. These fibers transmit from 4 to 18 mm (2, cm -1 ). IR Sources Fig. 2 Spectrum of SiC Source taken by MIR8025 TM with a KBr beam splitter and DTGS Detector For applications where a broadband source is required, we offer the QTH and SiC Sources. See Figs. 1 and 2 for spectral curves. Collection Optics We offer the off-axis parabolas that are part of our MIR8025 TM sources and detectors, as stand alone collecting optics. Fig. 3 illustrates their principle of operation. Phone: Fax:

2 Fiber Coupler with X-Y adjustment, mounted to input of MIR (SAMPLE COMPARTMENT P/N 80070) OFF-AXIS PARABOLA (28.6) (80008 AND ) OFF-AXIS PARABOLA (80007 AND SOURCES) OFF-AXIS PARABOLA SOURCE 0.8 (20.3) DETECTOR 7.28 (185.0) EFL 1.5 (38) DIA. 1.5 (38) DIA. 5.5 (139.7) EFL 0.8 (20.3) EFL 1.75 (44.5) DIA. 1.0 (25.4) Fig. 3 Off-axis parabolas for MIR8025 TM FT Spectrometers IR Sources 1.5 INCH SERIES MALE FLANGE 2.0 (51) 7.38 (187) 4.0 (102) 0.38 (9.6) 11.0 (279) 1.5 (38) 8.25 (210) 17.5 (446) Fig. 4 Dimensional diagram of Bench Accessory. Bench Accessory Accessory Bench, FT-IR Sampling Accessories, 3.5 F/#, 6 mm Diameter Spot Size Fiber Coupling Accessories Fiber Optic Coupling Accessory with SMA Termination 1.5 INCH SERIES QUICK CONNECT FEMALE FLANGE X-Y Fiber Optic Coupling Accessory, Req: 80041, or Fiber Termination SMA Termination for ST Termination for mm Oriel Ferrule Termination for Off-Axis Parabolas Effective Focal Length Used in These MIR8025 Devices in (139.7 mm) Sample Compartment in (185.0 mm) and Sources in (20.3 mm) and Detectors MONOCHROMATORS SPECTROGRAPHS ARRAY MINIS FT-IR S Source Type Spectral Range QTH Lamp 14,000 to 2,800 cm -1 ( mm) SiC Emitter 6,000 to 350 cm -1 ( mm) Mirror Effective Focal Length Collimated Beam Diameter Light Ripple Power Supply AC Input Power Supply DC Input 5.5 in (140 mm) 38 mm 0.10% peak to peak 110/ V 5.5 in (140 mm) 38 mm 0.10% peak to peak 110/ V sales@newport.com Web: newport.com

3 1334 MONOCHROMATORS InSb Detectors for Oriel MIR8025 FT Spectrometers Liquid nitrogen cooled detector Excellent performance in the 10,000 to 2,000 cm -1 range SPECTROGRAPHS ARRAY MINIS InSb Detector for MIR8025 TM FT Spectrometers The InSb Detector is a photovoltaic detector which approaches the maximum theoretical limit of sensitivity for background limited applications. Choose this detector for background sensitive radiometry applications. It requires liquid nitrogen cooling. Holding time for LN 2 exceeds four hours. NORMALIZED SIGNAL WAVELENGTH (µm) WAVENUMBER (cm -1 ) Specifications Responsivity Range 10,000-2,000 cm -1 Detector Element Size Window Material (1-5 mm) 2x2 mm Sapphire Preferred Beam Splitter CaF 2 Typical D* 3 x Operating Bandwidth (with amplifier) Liquid N 2 Cooled InSb Detector 100 Hz to 40 khz FT-IR S Fig. 1 Spectrum of 1273 K blackbody captured with InSb Detector, KBr beam splitter and the MIR 8025 Scanner Phone: Fax:

4 1335 MCT Detectors for Oriel MIR8025 FT Spectrometers MCT Detector The is a liquid nitrogen cooled MCT detector. It has a broad spectral response, close to that of DTGS, but lets you measure signals ~100X weaker. It also acquires data about 8X faster than DTGS. The comes with an industry standard, 8 hour dewar. It has a two stage, low noise amplifier. The first stage has three settings: LOW (gain of 10), MED (gain of 30), and HIGH (gain of 100). The second stage provides AC coupling and 10X amplification. 1.0 WAVELENGTH (µm) High sensitivity Broad spectral response, 5,000 to 600 cm -1 Specifications Responsivity Range 5, cm -1 Detector Element Size Window Material Preferred Beam Splitter (2-17 mm) 1x1 mm ZnSe KBr Typical D* (Peak) 5 x Operating Bandwidth (with amplifier) 100 Hz to 40 khz MONOCHROMATORS SPECTROGRAPHS ARRAY Liquid N 2 Cooled MCT Detector NORMALIZED SIGNAL WAVENUMBER (cm -1 ) Fig. 1 Spectrum of 1273K blackbody captured with the MCT Detector, KBr beamsplitter and the MIR 8025 Scanner. MINIS FT-IR S sales@newport.com Web: newport.com

5 XTG MONITORS BRIGHTNESS CONTRAST 1336 MONOCHROMATORS MIR8025 Modular IR Fourier Spectrometers Modular design to meet various measurement requirements Wide spectral coverage; 14,000 to 350 cm -1 (700 nm to 28 mm) SPECTROGRAPHS High resolution; up to 0.5 cm -1 (0.02 nm at 700 nm and 0.04 mm at 28 mm) Interchangeable beam splitters and detectors USB2.0 interface MIR8025 FT Spectrometer ARRAY If you don t have a traditional analytical application for an FT-IR and/or you re concerned about flexibility, consider the Oriel MIR8025 TM. We designed it specifically for Researchers and OEMs who want an instrument easily adaptable to their special needs, at an economical price, and without compromise in performance. The MIR8025 has selectable resolution starting with 0.5 cm -1, 0.25 m A.U. S/N ratio, and a very broad spectral range. The Components DETECTION SYSTEM FINE MIR 8025 SCANNER COARSE 8 Modular IR Fourier Spectrometer A/D FILTER AMPLIFIER USB 2.0 MINIS FT-IR S We took the modular approach when designing the MIR8025. We made the components that restrict the use of FT-IR instruments (beam splitters, detectors and sample compartments) interchangeable, so you don t have to break it apart when your needs change simply switch out the component(s). A complete MIR8025 FT Spectrometer is made up of: Source or sample MIR8025 Scanner Beam splitter and window Detection system Data acquisition package (included with every MIR8025 Scanner) How Does it Work? Fig. 1 illustrates how the MIR8025 works. Very simply, the Scanner modulates the radiation from the source or sample; the A/D board (in the Scanner) digitizes the analog signals from the detection system and sends them to a computer through a USB 2.0 interface. A stand-alone Runtime Version of MIRMat TM Software is included. MIRMat incorporates all instrument control parameters and data acquisition functions. RADIATION SOURCE OR SAMPLE MIR 8025 DATA ACQUISITION SOFTWARE Fig. 1 The heart of the MIR 8025 FT-IR Spectrometer is the Scanner. Optical Layout The MIR8025 uses a scanning Michelson Interferometer. Our optical layout includes corner cubes and a retro-reflector. The unique layout is immune to tilt and shift. The retro-reflector and beam splitter are mounted together, providing accurate alignment while desensitizing the system to vibrations and temperature variations. This unibody approach to the beam splitter makes for easy interchangeability with a minimum of realignment required. Phone: Fax:

6 LASER RADIATION AVOID DIRECT EYE EXPOSURE HELIUM -NEON / 4mW CLASS IIIa LASER PRODUCT 1337 INPUT/ OUTPUT RETRO REFLECTOR BEAM SPLITTER INPUT/OUTPUT CORNER CUBES Fig. 2 Our optical layout includes corner cubes and a retro-reflector mounted to the beam splitter. Open Architecture As modular and flexible as the MIR8025 is, for some applications, even the walls of the Scanner are a restriction. For applications that require the placement of a sample in the beam path, or for systems integrators who want to build an interferometer and electronics into their instrument, we can design an open architecture MIR8025 Scanner. CORNER CUBES BEAM SPLITTER INPUT/OUTPUT PORTS Fig. 3 Example of an open MIR 8025 FT-IR Software LASER RADIATION IS EMITTED FROM THIS APERTURE DANGER LASER CONTROL A/D FILTER AMPLIFIER MOTOR CONTROL MOTION MECHANISM HeNe LASER We didn t limit the flexibility of the MIR8025 to its hardware; the software is also flexible. MIRMat 8025 is a powerful Windows XP based instrument control and data acquisition and processing application, included with every instrument. For those who wish to do their own programming, we include an Active X interface to control the MIR8025 from your own software. Specifications Scanner Function Configuration Interferometer Beam Splitter Spectral Range - KBr Beam Splitter Spectral Range - CaF 2 Beam Splitter Aperture inch (mm) 1.5 (38) Throughput Spectral analyzer Main unit is an enclosed & purgeable chamber with KBr or CaF 2 input/output windows, containing an interferometric modulator 90 Michelson interferometer with corner cube reflectors and retro prism KBr for Mid-Infrared CaF2 for Near Infrared Beam splitters are interchangeable 6, cm -1 ( mm) 14,000-1,200 cm -1 ( mm) 7 x 10-3 (cm2 Sr) for acceptance angle corresponding to 1 cm-1 resolution Resolution* Selectable from cm -1 in 8 steps; 0.5 cm -1 resolution corresponds to 0.02 nm at 700 nm and 0.04 mm at 28 mm Scanning Mirror Speed at Hz** Scanning Mirror Speed at Hz Scanning Mirror Speed at 5000 Hz** Reference Signal ZPD Point Interferogram Oversampling 15.8 mm/s 25.3 mm/s 3.15 mm/s Two HeNe laser sinusoidal interferograms inquadrature for scanner control and data acquisition Scanning mirror can be finely adjusted by the software to get ZPD point exactly in the middle of a scan; this position will be maintained with zero error as long as the unit is powered up Double Sided 1x, 2x, 4x Wavelength Accuracy 0.01 cm -1 Signal to Noise Optical Axis Height inch (mm) 2.88 (73.1) 1000:1 at 2500 cm-1, 4 cm-1 resolution, 1 scan sample/1scan reference, using DTGS detector Dimensions inch (mm) x 12 x 6.75 (565.2 x x 171.5) Weight lbs (kg) 35 (16) *Tuned for 1 divergence, exiting the Scanner. **Frequency of the reference interferogram. Data Acquisition Computer Interface USB 2.0 Hardware Sampling Frequency Main Amplifier Low/High Pass Filters External Data Acquisition Software Selectable Units Type of Data Presentation Internal 16 bit A/D converter with 100kHz throughput 80 khz - 1 khz with oversampling; sampling pulses can be programmably delayed Gain of in 8 steps; may be chosen manually or automatically "8 low pass filters with cut-off frequencies 60 khz khz 3 high pass filters with cut-on frequencies 10-1,000 Hz Programmably turned on/off depending on scan speed and spectral range" Signals are available through a special connector for optional external data acquisition system: sampling trigger, beginning and end of useful data range, direction Windows based packages for instrument control and data acquisition cm -1, mm, nm, ev, kcal/mol, kj/mol, Kcm -1, mm, nm, ev, kcal/mol, kj/mol, Kcm -1, mm, nm, ev, kcal/mol, kj/mol, K Interferogram, single beam, transmittance, absorbance MONOCHROMATORS SPECTROGRAPHS ARRAY MINIS FT-IR S sales@newport.com Web: newport.com

7 COARSE FINE MIN MED TIME CONSTANT MAX V/A G A I N 1338 MONOCHROMATORS SPECTROGRAPHS ARRAY Software Functions Set Scan Parameters Scanner Calibration Set FFT Parameters Set the Main Amplifier Parameters Calculations Save Data File Software Development Computer Requirements Windows XP with SP3 USB 2.0 Hub Minimum 512MB Memory High Resolution Monitor Pentium 2 or higher >2.6 GHz Internet Explorer 6.0 or higher CD ROM Speed, resolution, oversampling on/off, bidirectional data acquisition on/off Fine adjustment of ZPD and delay of A/D converter triggering signals Type of apodization, zero fill, parameters for phase correction and scaling Gain, low and high pass filters Basic mathematic operations, black body curves ASCII, Binary MatLab Files Microsoft Active X Control allows you to build your own specific application using Visual Basic, Visual C++, MatLab, Labview, or other Microsoft application compatible with Active X technology. 500MB minimum available space required for program installation. Scanners Oriel MIR 8025 Scanners include a beam splitter, two windows, and MIRMat 8025 Software Oriel MIR8025 IR Fourier Spectrometer, KBr, 6, cm-1, mm MIR8025 IR Fourier Spect, CaF 2, 14,000-1,200 cm-1, mm Replacement Beam Splitters FT-IR Beam Splitter, Replacement, CaF FT-IR Beam Splitter, Replacement, CaF 2 Replacement Windows (set of two) FT-IR Window, Replacement, KBr FT-IR Window, Replacement, CaF 2 SCANNER MINIS Near IR Scanner -1 14,000-1,200 cm ( µm) Includes CaF Beam Splitter and Window 2 Near IR Sources 25 Modular IR Fourier Spectrometer 25 Modular IR Fourier Spectrometer SOURCE Mid IR Scanner -1 6, cm ( µm) Includes KBr Beam Splitter and Window Mid IR Sources Your Near IR Source QTH Source 14,000-2,800 cm -1 ( µm) SiC Source -1 6, cm ( µm) Your Mid IR Source or Sample FT-IR S Si 14,000-10,000 cm -1 (0.7-1 µm) Near IR Detectors InGaAs 10,000-6,000 cm -1 (1-1.7 µm) DETECTOR InSb 10,000-2,000 cm -1 (1-5 µm) Mid IR Detectors DTGS 6, cm -1 ( µm) Extended InGaAs 8,000-4,000 cm -1 ( µm) Your Near IR Detector 80015/80016 HgCdZnTe 3,550-1,700 cm -1 (2.8-6 µm) MCT 5, cm -1 (2-17 µm) Your Mid IR Detector Complete Customized Oriel FTIR Spectrometer Fig. 4 To build a complete MIR8025 FT-IR Spectrometer, you need a scanner, source, and detector (see page 1332 for sources and page 1330 for an overview of available detectors.) We also offer an accessory bench to house "in-compartment" sampling accessories. Phone: Fax:

8 LASER RADIATION AVOID DIRECT EYE EXPOSURE HELIUM -NEON / 4mW CLASS IIIa LASER PRODUCT (317.5) 4.75 (120.6) MOTOR CONTROL A/D FILTER AMPLIFIER LASER CONTROL LASER RADIATION IS EMITTED FROM THIS APERTURE (565.2) DANGER MOTION MECHANISM 5.13 (130.3) (295.4) MONOCHROMATORS SPECTROGRAPHS ARRAY BEAM SPLITTER 3.63 (92.2) 2.88 (73.1) 4.18 (106.2) 1.5 INCH SERIES MALE FLANGES X-Y ADJUSTMENT KNOBS 8025 Modular IR Fourier Spectrometer LOCKING SCREW HeNe LASER POWER SUPPLY 5.25 (133.4) 6.75 (171.5) MINIS FT-IR S Fig. 5 Schematic drawing of the Oriel MIR 8025 Scanner sales@newport.com Web: newport.com

9 1340 MONOCHROMATORS Silicon and InGaAs Detectors for Oriel MIR8025 FT Spectrometers Si and InGaAs models Room temperature and TE cooled SPECTROGRAPHS Silicon Detector ARRAY MINIS This family of photodiode detectors covers the near infrared region, 14,000 to 6,000 cm -1 (0.7 to 1mm). We offer Si and various models of InGaAs detectors. The Silicon Detector has excellent stability and sensitivity, albeit over a limited range. The InGaAs detectors have a slightly broader spectral response, particularly the extended InGaAs model. These are the preferred detectors for Overtone Spectroscopy. The Detector requires the TE Cooler Controller. NORMALIZED INTENSITY EXTENDED InGaAs H 2 0 WAVELENGTH (µm) InGaAs Si WAVENUMBER (cm -1 ) Fig. 1 Spectrum of 1273 K blackbody captured with InGaAs and Si Detectors, CaF 2 beam splitter and the MIR 8025 Scanner Specifications Silicon Detector Responsivity Range 14,000-10,000 cm -1 (0.7-1 mm) InGaAs Detector 10,000-6,000 cm -1 (1-1.7 mm) Extended InGaAs Detector 8,000-4,000 cm -1 ( mm) Detector Element Size 1 mm diameter 1 mm diameter 1 mm diameter Window Material BK7 BK7 BK7 Preferred Beam Splitter CaF 2 CaF 2 CaF 2 Typical D* (cm Hz 1/2 W -1 ) 1 x x x Operating Bandwidth (with amplifier) Transimpedance gain (A/V) *Gain Dependent Detectors 100 Hz to 40 khz* 100 Hz to 40 khz* 100 Hz to 40 khz* Selectable from Selectable from Selectable from 10 4 to to to Near-IR Detector Module, Silicon, 14,000-10,000 cm -1, mm Near-IR Detector Module, InGaAs, 10,000-6,000 cm -1, mm Near-IR Detector, Extended InGaAs, 8,000-4,000 cm -1, mm* *Requires TE Cooler Controller FT-IR S TE Cooler Controller TE Cooler Controller* *Specify mains voltage when ordering Phone: Fax:

10 1341 TE Cooled HgCdZnTe Detectors for Oriel MIR8025 FT Spectrometers TE Cooled HgCdZnTe Detector System This MIR 8025 Detector brings you close to the sensitivity of the LN 2 cooled InSb detector (described on page 1334), with the convenience of TE cooling. The TE Cooler Controller is part of the Detector Package; no added electronics are necessary. TE cooling simpler to use than LN 2 cooled InSb Broad spectral response, 3,550-1,700 cm -1 Specifications Responsivity Range 3,550-1,700 cm -1 Detector Element Size (2.8-6 mm) 1x1 mm Window Material CaF 2 Preferred Beam Splitter CaF 2 Typical D* 1.2 x Operating Bandwidth TE Cooled HgCdZnTe Detector, 110 VAC TE Cooled HgCdZnTe Detector, 220 VAC 10 Hz to 140 khz MONOCHROMATORS SPECTROGRAPHS ARRAY Fig. 1 Responsivity of 80015/6 HgCdZnTe Detectors. MINIS FT-IR S sales@newport.com Web: newport.com