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Modular System Components
Light Sources
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| He-Ne Laser: | 2 mW or 5 mW (the latter is recommended for weakly reflecting surfaces)
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| Laser Diode: | More compact than He-Ne laser. Wavelength and output
power can be specified.
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| Quartz-Halogen: |
75 W lamp in Kohler illumination lamp housing.
Current regulated power supply
(l > 400 nm)
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| Xe Arc: |
75 W Xe high pressure arc lamp, air cooled, with starter and
power supply. EMF shielded.
(l > 200 nm)
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Spectral Selection
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| Interference Filters: |
50 - 10 nm bandwidth, all standard
wavelengths available
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| Filter Wheel: |
automatic change of filter (specify
configuration)
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| Monochromator |
Focal length 100 mm, f4, typ. resolution 4 nm
(200 nm < l < 850 nm)
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Polarisers and Retarders
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| Polaroid: |
Low-cost, for visible spectrum and near UV
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| Rotating Retarder: |
Single wavelength or achromatic. Low vibration rotation stage w.
microcontroller interface
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| Birefringence Modulator: |
3 component high stability design, 50 kHz modulation frequency
(l > 200 nm)
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Optics
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| Microscope Objective: |
Please contact us for more
information!
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Detectors
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| Photomultiplier: |
11 stage Thorn EMI end-on type, S-20
response, with housing and high voltage power supply
(180 < l < 950 nm)
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| Si Photodiode: |
UV-enhanced Si diode with low-noise preamp, separate
AC/DC outputs.
(180 < l < 1100 nm)
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| CCD Camera: |
12-bit digital, 256x256 pixel, > 100 frames/s; PCI
framegrabber board and software.
(200 < l < 1200 nm)
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Mounting System
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| Goniometer Table: |
Vertical mount, 360° rotation. Angular
resolution 1/20 degree. Step motor arm drive with control unit. High
rigidity design for direct mounting of all components.
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| Sample Mounts: |
All Modular System components are precision mounted
in fixed height optical track mounts. Blank mounts available for customer
modifications.
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| Sample Stage: |
Standard xyz mount, 25 mm travel. Computer controlled scanning stage available.
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Interface
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| Microcontroller: |
Provides true background real-time data
acquisition w. lock-in interface and 6 additional analog inputs (12 and 16-bit versions available; acquisition rate 60 kHz max) and 2 analog outputs. 3 stepping motor drivers for standard 4-phase stepping motors. Can be used as interface to Lock-In, Birefringence Modulator, monochromator, filter wheels, Arm drive, retarder, polariser, and custom devices. Connection to host computer via standard serial port (max. data rate 57,600 baud).
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| Computer: |
Pentium II computer under WindowsNT. Options: Printer,
ZIP/JAZ drive.
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| Software |
IgorPro data analysis and visualisation software from
WaveMetrics with custom extensions.
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Contact us if a component you need is not on this list.
Specifications are subject to change without notice.
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© beaglehole instruments 1998,1999 All material on this page is copyright. Last updated: Thursday, 18 January 2001 |