Related Manuals for THORLABS INT-MSI-1300
Summary of Contents for THORLABS INT-MSI-1300
- Page 1 Operation Manual Thorlabs Instrumentation INT-MSI-1300 Michelson Type OCT Interferometer...
- Page 2 Date: 4.5.2019 © Copyright 2018, Thorlabs GmbH...
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Page 3: Table Of Contents
4.3 Repair Appendix 5.1 Technical Data 5.2 Mechanical Drawing 5.3 Warranty 5.4 Certifications and Compliances 5.5 Thorlabs “End of Life” Policy (WEEE) 5.5.1 Waste treatment on your own responsibility 5.5.2 Ecological background 5.6 List of Figures 5.7 List of Acronyms... - Page 5 We and our international partners are looking forward to hear from you. Thorlabs GmbH This part of the instruction manual contains every specific information on how to handle and use the INT-MSI-1300 Michelson type OCT Interferometer. A general description is followed by explanations of how to operate the unit. Attention...
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Page 7: Overview
1 Overview 1 Overview The Thorlabs INT-MSI-1300 Michelson type OCT Interferometer is a subassembly to be used in both swept source Fourier domain and time domain OCT systems and other applications. It contains a fusion coupler network to form a Michelson interfer- ometer and has optical outputs for a reference and sample arm. -
Page 8: Safety
The unit must not be operated in explosion endangered environ- ments! Only with written consent from Thorlabs GmbH may changes to sin- gle components be carried out or components not supplied by Thorlabs GmbH be used. This precision device is only dispatchable if duly packed into the complete original packaging including the plastic form parts. -
Page 9: Getting Started Quickly
Please check prior to operation, if the indicated line voltage range on the power supply matches with your local mains voltage! NOTE If you want to use your own power supply, you can ask Thorlabs for an appropriate power connector cable. INT-MSI-1300 / page 3... -
Page 10: Setup
Carefully unpack the unit and accessories. If any damage is noticed, do not use the unit. Call Thorlabs and have us replace the defective unit. If necessary, mount the unit on your optical table or application. The unit has four tapped 6-32 mounting holes (see section 3.5 for details). - Page 11 To prevent saturation of the amplifier keep the optical input power less than the saturation power listed in specification. Attention Refer to the specification and pay attention to the optical damage threshold! Exceeding these values will permanently destroy the detectors! INT-MSI-1300 / page 5...
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Page 12: Detailed Description
0.2mm. The housing includes FC/APC angled fiber adapters for robustness and easy of use. The integrated balanced detec- tor similar to Thorlabs PDB145C is used for detection of the generated interference fringes. An additional aiming laser input simplifies the optical alignment of the sam- ple. -
Page 13: Optical Input And Output, Fiber Network
ARM port. Furthermore, fusion couplers are selected to get the OUTPUT signal near- ly independent to input polarization changes. Figure 2 and Figure 3 show the typical spectral behavior of the INT-MSI-1300 measured from 1300nm IN to REFERENCE ARM and SAMPLE ARM ports. - Page 14 3 Detailed Description REFERENCE ARM SAMPLE ARM 1200 1250 1300 1350 1400 Wavelength (nm) Figure 2: INT-MSI-1300 coupling from 1300nm IN to SAMPLE and REFERENCE ARM ports REFERENCE ARM SAMPLE ARM 1200 1250 1300 1350 1400 Wavelength (nm) Figure 3: INT-MSI-1300 normalized coupling from 1300nm IN to SAMPLE and...
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Page 15: Electrical Output
3 Detailed Description 3.3 Electrical Output The INT-MSI-1300 has an OUTPUT SMA connector carrying the detected interfer- ence signal. This electrical OUTPUT is the output of a balanced detector. It delivers an output voltage proportional to the difference between it’s two optical input signals (i.e. differ- ence between the photo currents of both photo detectors), which is amplified by an ultra low noise, high-speed transimpedance amplifier. - Page 16 (resolution bandwidth 10 kHz, video BW 3kHz). The optical inputs of the INT-MSI-1300 were darkened during measurement. The lower curve is measured with INT-MSI-1300 switched off , i.e., it represents the measure- ment system’s noise floor.
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Page 17: Detector Responsivity
3 Detailed Description 3.4 Detector Responsivity INT-MSI-1300 uses InGaAs PIN photodiodes. Figure 6 shows a typical responsivity curve for this photodiode type. 1000 1200 1400 1600 1800 Wavelength (nm) Figure 6: INT-MSI-1300 detector responsivity This wavelength dependency affects the output signal amplitude. In order to com- pensate this responsivity, the measured electrical signal must be multiplied by the normalized wavelength dependent responsivity. -
Page 18: Mounting The Int-Msi-1300
3 Detailed Description 3.5 Mounting the INT-MSI-1300 The INT-MSI-1300 is housed in a rugged 120x80x21mm shielded aluminum enclo- sure. The unit can be mounted to small edges by 6-32 screws, see Figure 7. Threads are of 6 mm depth. Figure 7: Possible mounting points for INT-MSI-1300 An alternative cover with four mounting holes or a customized cover can be ordered on request, see Figure 8. -
Page 19: Basic Measurement Setup
3 Detailed Description 3.6 Basic Measurement Setup This section is dedicated to INT-MSI-1300 Michelson type OCT Interferometer basic setup in conjunction with a Fourier domain swept laser source system and in a time domain OCT system. For a Fourier domain OCT setup a swept laser is connected to 1300nm IN while an red aiming laser is connected to 660nm IN. - Page 20 Device Device Figure 10: Basic time domain OCT measurement setup The INT-MSI-1300 is designed for low reflectivity samples. For high reflectivity sam- ples it could be necessary to attenuate 1300nm IN light to prevent saturation of the balanced detector. Polarization control can improve fringe contrast. It is recommended to use a polariza- tion controller in one interferometer path to adjust for maximum fringe contrast (not shown in the basic setup diagrams).
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Page 21: Recommendations
FC/APC patch cords made by Thorlabs as well as made by Diamond. If insertion loss of the INT-MSI-1300 seems to be too high (higher than listed in specification), please try another FC/APC patch cord and/or adapter combination. -
Page 22: Maintenance And Repair
4.2 Cleaning To clean the INT-MSI-1300 housing, use a mild detergent and damp cloth. Do not soak the unit in water or use solvent based cleaners. It is not recommended to remove FC adaptors to clean the inner FC/APC connectors. -
Page 23: Repair
4 Maintenance and Repair 4.3 Repair There are no serviceable parts in the INT-MSI-1300 or power supply. The INT-MSI- 1300 does not contain any components to be repaired by the user. If any malfunction should occur or you suspect a problem, please contact Thorlabs GmbH for repair return instructions. -
Page 24: Appendix
< 5 mV DC-offset Electrical Outputs Others Size 120x80x21 mm³ 12V, 250 mA Power Supply All accuracy data are valid at 23 ± 5°C and 45 ±15% humidity * includes connector losses, measured at center wavelength INT-MSI-1300 / page 18... -
Page 25: Mechanical Drawing
5 Appendix 5.2 Mechanical Drawing INT-MSI-1300 / page 19... -
Page 26: Warranty
5 Appendix 5.3 Warranty Thorlabs GmbH warrants material and production of the INT-MSI-1300 for a period of 24 months starting with the date of shipment. During this warranty period Thorlabs GmbH will see to defaults by repair or by exchange if these are entitled to warranty. -
Page 27: Certifications And Compliances
Industrial, Scientific, and Medical Conformity - Equipment: 1992 FCC EMC Com- Emissions comply with the Class A Limits of FCC Code of Federal Regulations pliance 47, Part 15, Subpart B Using high-quality shielded interface cables. Minimum Immunity Test requirement. INT-MSI-1300 / page 21... -
Page 28: Thorlabs "End Of Life" Policy (Weee)
5.5.1 Waste treatment on your own responsibility If you do not return an “end of life” unit to Thorlabs, you must hand it to a company specialized in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site. -
Page 29: Ecological Background
The intent of the WEEE directive is to enforce the recycling of WEEE. A controlled recycling of end of live products will thereby avoid negative impacts on the environ- ment. Figure 11: Crossed out “wheelie bin” symbol INT-MSI-1300 / page 23... -
Page 30: List Of Figures
5.6 List of Figures Figure 1: Functional block diagram of the INT-MSI-1300 ........... 6 Figure 2: INT-MSI-1300 coupling from 1300nm IN to SAMPLE and REFERENCE ARM ports ......................8 Figure 3: INT-MSI-1300 normalized coupling from 1300nm IN to SAMPLE and REFERENCE ARM ports .................. -
Page 31: Addresses
5 Appendix 5.8 Addresses For technical support or sales inquiries, please visit us at www.thorlabs.com/contact for our most up-to- date contact information. USA, Canada, and South America UK and Ireland Thorlabs, Inc. Thorlabs Ltd. sales@thorlabs.com sales.uk@thorlabs.com techsupport@thorlabs.com techsupport.uk@thorlabs.com Europe Scandinavia...
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