OCT. Optical Coherence Tomography

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1 OCT Optical Coherence Tomography Optical Coherence Tomography (OCT) is a non-invasive, non-destructive imaging technique that enables high-resolution, cross-sectional imaging of a wide range of highly scattering media, such as biological tissues. It can provide real-time 2D and 3D images of both excised samples and those inside living organisms. OCT has been employed as a valuable imaging modality in fields of scientific and medical research such as ophthalmology, angiology, neurology, dermatology, gastroenterology, embryology, oncology, and cardiology. To address the need to meet a wide range of imaging requirements, Thorlabs manufactures modular OCT components that enable the configuration of customized systems. We currently offer four OCT product series, each of which possesses unique imaging capabilities: Vega, Telesto, Ganymede, and Callisto.

2 Product Line At-a-Glance Vega Series OCS1310V1-BU Rapid and Ultra Long Range Imaging OCS1310V2-BU Highest Speed Imaging u 100 khz Line Rate u 12 mm Imaging Depth Range u Less than 16 µm Axial Resolution u 200 khz Line Rate u 5 mm Imaging Depth Range u Less than 16 µm Axial Resolution Telesto Series TEL1300V2-BU High Resolution Imaging of Highly Scattering Samples TEL1325LV2-BU Long Range Imaging u Less than 5.5 µm Axial Resolution u 3.5 mm Imaging Depth Range u Adjustable Line Rate up to 76 khz u 7.8 mm Imaging Depth Range u Less than 12 µm Axial Resolution u Adjustable Line Rate up to 76 khz Ganymede Series GAN930V2-BU General-Purpose Imaging GAN905HV2-BU Ultra High Resolution Imaging u User Adjustable Line Rate up to 36 khz u Less than 6 µm Axial Resolution u 2.9 mm Imaging Depth Range u Less than 3 µm Axial Resolution u User Adjustable Line Rate up to 36 khz u 1.9 mm Imaging Depth Range Callisto Series CAL930V1-BU Low Cost Imaging u Ideal for In Vitro Samples and Education u 1.25 khz Line Rate u Less than 7 µm Axial Resolution

3 Configuration Options Scanning Systems Rigid Scanner Adjustable CageCompatiable Scanner Hand-Held Probe Easy-to-Use Scanning System Requires No Alignment Provides Access to and Adjustability of the OCT Scanning Beam Light Weight and Compact for Maneuverability Scan Lens Kits Accessories u OCT Scan Lenses for High-Quality Images Across a Wide Field of View u s Enable Easy Exchange Between Lens Kits High Resolution General Purpose Additional Accessories Available for an Enhanced Imaging Experience Reference Arm s (Rigid Only) Foot Switch Matching Fiber (Vega Series Only) Z-Spacers Scanner Stand Provide Guidance for Optimal Positioning of Samples Relative to Scanning Systems Sample Stage

4 Vega Series: High Speed and Long Imaging Range These Swept-Source OCT systems are designed for applications where speed or imaging depth range are the highest priority. C Features CT High-Speed Imaging u Real-time Tracking of Dynamic Events u Rapid Volume Acquisition u Eliminates Motion Artifacts Long Imaging Range I u Images Less Likely to Fall Out of the Field of View I u Stronger Signal Intensity at Longer Depths Specifications Cross-sectional image of the anterior segment of an excised pig eye ex vivo. C: Cornea, CT: Corneal Tear, I: Iris Total Field of View (W x D): 10 mm x 9 mm Base Unit Item # OCS1310V1-BU OCS1310V2-BU Center Wavelength 1300 nm Sensitivity >103 db >100 db Axial/Depth Resolution (Air/Tissue a ) 16 µm / 11.4 µm 18 µm / 13 µm Imaging Depth Range (Air) 12 mm >5 mm A-Scan/Line Rate 100 khz 200 khz Computer Specifications b Operating System Data Acquisition Windows 7, 64 Bit A/D Conversion Rate: 500 MS/s A/D Resolution: 12 Bit a Theoretical Value Calculated from the Refractive Index (n=1.4) b Computer Specifications Subject to Change

5 Vega Series: The Options OCTG-1300NR Rigid Scanner Hand-Held Probe OCTH-LK20 General Purpose Scan Lens Kit OCTH-LK30 Matching Fiber OCTH-1300NR Hand-Held Probe Rigid & Adjustable OCT-LK2 High Resolution OCT-FA2 OCT-LK3 General Purpose OCT-FA3 OCTP-1300NR(/M) Adjustable Cage- Compatible Scanner Step 2: Scanning System Step 1: Base Unit Step 3: Scan Lens Kit Step 4: Z-Spacer (Optional) Hand-Held Probe (Ring) OCT-LK4 OCT-FA4 Step 5: Choose Accessories (Optional) OCTH-AIR20 for OCTH-LK20 Kit OCTH-AIR30 for OCTH-LK30 Kit Rigid & Adjustable OCS1310V1-BU For Long-Range Imaging Applications OCT-AIR3 for OCT-LK3 Kit (Ring) OCT-IMM3 for OCT-LK3 Kit (Immersion) OCT-IMM4 for OCT-LK4 Kit (Immersion) OCT-XYR1 XY Translation and Rotation Stage OCS1310V2-BU For High-Speed Imaging Applications OCT-PEDAL2 Foot Switch OCT-STAND Stand for Rigid and Adjustable

6 Telesto Series: Deep Imaging with High Resolution These spectrometer-based OCT systems are used for high-resolution imaging of samples with high optical scattering properties. Features (a) (a) En face 2D OCT images of mouse brain with skull intact. (b) (b) Speckle variance shows the blood vessel structure in the brain. Deep Imaging u Deeper Image Penetration in Tissue and Highly-Scattering Samples High Resolution u Characterize More Features with Higher Resolution Flexibility u Adjustable Integration Time Provides User- Controlled Balance Between Sensitivity and Speed Specifications Item # TEL1300V2-BU TEL1325LV2-BU Center Wavelength 1300 nm 1325 nm Sensitivity a 97 db (at 76 khz) to 112 db (at 5.5 khz) Axial/Depth Resolution (Air/Tissue b ) 5.5 µm / 3.9 µm 12 µm / 8.6 µm Imaging Depth Range (Air) 3.5 mm 7 mm A-Scan/Line Rate 5.5 khz, 28 khz, 48 khz, 76 khz Computer Specifications c Operating System Data Acquisition Windows 7, 64 Bit Camera Link a Using a Common Path Probe with 50% Beamsplitter b Theoretical Value Calculated from the Refractive Index (n=1.4) c Computer Specifications are Subject to Change

7 Telesto Series: The Options OCTH-LK20 General Purpose OCTH-LK30 Hand-Held Probe Scan Lens Kits Reference Arm (Rigid Scanner Only) OCTH-1300 Hand-Held Probe OCTG-1300, OCTG-1050 Rigid Scanner Rigid & Adjustable OCT-LK2 High Resolution OCT-RA2 OCT-LK3 General Purpose OCT-RA3 OCTP-1050(/M), OCTP-1300(/M) Adjustable Cage- Compatible Scanner Step 2: Scanning System Step 3: Scan Lens Kit OCT-LK4 OCT-RA4 Step 1: Base Unit Step 4: Z-Spacer (Optional) Hand-Held Probe (Ring) OCTH-AIR20 for OCTH-LK20 Kit OCTH-AIR30 for OCTH-LK30 Kit Step 5: Choose Accessories (Optional) Rigid & Adjustable Scanner TEL1325LV2-BU For Long-Range Imaging Applications OCT-AIR3 for OCT-LK3 Kit (Ring) OCT-IMM3 for OCT-LK3 Kit (Immersion) OCT-IMM4 for OCT-LK4 Kit (Immersion) TEL1300V2-BU For High-Resolution Imaging Applications OCT-XYR1 XY Translation and Rotation Stage OCT-PEDAL2 Foot Switch OCT-STAND Stand for Rigid and Adjustable

8 Ganymede Series: High Resolution These spectrometer-based OCT systems are designed for high-resolution imaging. Features High Resolution u Bridges the Gap Between Confocal Microscopy and Conventional OCT in Terms of Resolution and Imaging Depth En face OCT image slices of a mouse trachea. 50 µm separation between optical slices. u Non-Destructively Resolve Cellular-Level Features Flexibility u Adjustable Integration Time Provides User-Controlled Balance Between Sensitivity and Speed Specifications Item # GAN930V2-BU GAN905HV2-BU Center Wavelength 930 nm 900 nm Sensitivity a 91 db (at 36 khz) to 97 db (at 5.5 khz) Axial/Depth Resolution (Air/Tissue b ) 6 µm / 4.3 µm 3 µm / 2.1 µm Imaging Depth Range (Air) 2.9 mm 1.9 mm A-Scan/Line Rate 5.5 khz, 15 khz, 36 khz Computer Specifications c Operating System Data Acquisition Windows 7, 64 Bit Camera Link a Using a Common Path Probe with 50% Beamsplitter b Theoretical Value Calculated from the Refractive Index (n=1.4) c Computer Specifications are Subject to Change

9 Ganymede Series: The Options OCTH-LK20-BB General Purpose OCTH-LK30-BB Hand-Held Probe Scan Lens Kit Reference Arm (Rigid Scanner Only) OCTG-900 Rigid Scanner OCT-LK2-BB High Resolution OCT-RA2 OCTH-900 Hand-Held Probe Rigid & Adjustable OCT-LK3-BB General Purpose OCT-RA3 OCTP-900, OCTP-900/M Adjustable Scanner Step 2: Scanning System Step 1: Base Unit Step 3: Scan Lens Kit Step 4: Z-Spacer (Optional) Hand-Held Probe (Ring) OCT-LK4-BB OCT-RA4 Step 5: Choose Accessories (Optional) OCTH-AIR20 for OCTH-LK20-BB Kit OCTH-AIR30 for OCTH-LK30-BB Kit Rigid & Adjustable GAN930V2-BU Video-Rate, General-Purpose Imaging OCT-AIR3 for OCT-LK3-BB Kit (Ring) OCT-IMM3 for OCT-LK3-BB Kit (Immersion) OCT-IMM4 for OCT-LK4-BB Kit (Immersion) GAN905HV2-BU Highest Resolution Imaging OCT-XYR1 XY Translation and Rotation Stage OCT-PEDAL2 Foot Switch OCT-STAND Stand for Rigid and Adjustable

10 Callisto Series: High Sensitivity at Entry-Level Costs This low-cost spectrometer-based OCT system is utilized for highsensitivity imaging of static or excised samples. Features High Sensitivity u Increased Contrast Enables Identification of Subtle Features and Layers Accessibility u Low Cost Enables OCT Accessibility to All Research and Education Institutions u Operates via USB with Included Laptop 0.5 mm Computer for Easy Portability Laminated Foil Imaged at 2 μm Axial Resolution Specifications Item # Center Wavelength Sensitivity a CAL930V1-BU 930 nm 105 db Axial/Depth Resolution (Air/Tissue b ) 7 µm / 5 µm Imaging Depth Range (Air) A-Scan/Line Rate 1.7 mm 1.25 khz Computer Specifications c Operating System Data Acquisition Windows 7, 64 Bit USB a Using a Common Path Probe with 50% Beamsplitter b Theoretical Value Calculated from the Refractive Index (n=1.4) c Computer Specifications are Subject to Change

11 Callisto Series: The Options OCTH-LK20-BB General Purpose OCTH-LK30-BB OCTG-900 Rigid Scanner Hand-Held Probe Scan Lens Kit Reference Arm (Rigid Scanner Only) OCT-LK2-BB High Resolution OCT-RA2 OCTH-900 Hand-Held Probe Rigid & Adjustable OCT-LK3-BB General Purpose OCT-RA3 OCTP-900(/M) Adjustable Scanner Step 2: Scanning System Step 3: Scan Lens Kit OCT-LK4-BB OCT-RA4 Step 1: Base Unit Step 5: Choose Accessories (Optional) Step 4: Z-Spacer (Optional) Hand-Held Probe (Ring) OCTH-AIR20 for OCTH-LK20-BB Kit OCTH-AIR30 for OCTH-LK30-BB Kit CAL930V1-BU Low Cost Imaging Ideal for Static Samples or Education Rigid & Adjustable OCT-AIR3 for OCT-LK3-BB Kit (Ring) OCT-IMM3 for OCT-LK3-BB Kit (Immersion) OCT-IMM4 for OCT-LK4-BB Kit (Immersion) OCT-XYR1 XY Translation and Rotation Stage OCT-PEDAL2 Foot Switch OCT-STAND Stand for Rigid and Adjustable

12 Scanning Systems for Ease and Flexibility Thorlabs OCT scanning systems perform 2D scanning of the OCT beam, enabling 2D cross-sectional and 3D volumetric imaging. Additionally, an integrated video camera and LED illumination ring provide real-time visualization of the sample surface while imaging. All Thorlabs OCT systems can be configured with one or more scanning systems. Rigid Scanning System Our Rigid Scanning Systems provide stable and easy operation of the OCT scanning beam. The entire design of the rigid scanner is contained in a rugged, lighttight housing that ensures repeatability by preventing misalignment of the scanning beam. Adjustable Scanning System For OCT integrators that require flexibility in their scanning system, the Adjustable Scanning Systems enable customization of the optical beam path using Thorlabs cage- and SM1-compatible components. Hand-Held Probe For applications that require a light-weight, easily maneuverable OCT scanning system, we provide our new Hand-Held Probe. This ergonomically designed compact probe enables easy portability of the OCT scanning system. The Hand-Held Probe utilizes the same high-resolution video camera and sample illumination system that is incorporated in the Rigid Scanning systems. Also, the Hand-Held Probe can be adapted for a variety of applications through specially designed scan lenses, sample Z-spacers, as well as user-configurable push buttons. Rigid Scanner Hand-Held Probe Scanner

13 Callisto Series: The Options Interchangeable Scan Lens Kits Whether your application requires high resolution, long working distance, or something in between, our OCT Scan Lens kits are designed for optimal OCT image quality across a large field of view. These scan lens kits are easily interchanged and include a scan lens focusing objective, illumination tube, IR card, and calibration guide. Note: when exchanging scan lenses using a Rigid Scanning System, a Reference Arm is required. Please contact us for more details. Sample Z-Spacers Provide Imaging Stability Thorlabs Sample Z-Spacers enable optimal positioning of a scanning system relative to the sample. They can be adjusted and then locked in place for increased stability. On top of providing a distance guide, our Immersion Z-Spacer enables better depth of penetration by reducing strong back reflections that often occur at the sample surface. Convenient Imaging Accessories Leveraging Thorlabs long history of optomechanical design expertise, we offer stands for mounting scanning systems as well as sample positioning stages. Additionally, a USB foot switch is available for hands-free activation of software controls. Sample Positioning Stage Foot Switch Stand

14 High Performance Acquisition and Processing Software Flexible Imaging Modes u Sequential Single Depth Scanning (M-Mode) u 2D Cross-Sectional Imaging (B-Mode) u 3D Volume Imaging (C-Mode) u Time Series Volume Imaging u Flow Imaging Easy Scan Control u Live Video Imaging Figure 1. Rendering View with Controls Shown Enlarged to the Right u Draw and Scan Feature Enables User- Defined Scan Patterns Drawn Directly on Live Video Image u Various Processing and Averaging Options for Enhanced Image Quality u One-Click Acquisition and Recording Options Advanced Dataset Management u Record Data with Study (or Test Series) Names and Identifiers Figure 2. Speckle variance image of blood vessels in the back of a hand taken with a Telesto series system. u Quick Access to Recently Acquired Data Sets u Export Data in Various Image Formats or Directly into ImageJ Software Customization Using our Software Development Kit (SDK) create your own software using all or a few of the features provided in the ThorImage OCT user software. The SDK, available in C++ and LabVIEW, is included with all OCT systems. Figure 3. Draw and Scan Feature Used to Define a Scan Pattern

15 Application Support Through close collaboration with worldwide experts in OCT research and development, in conjunction with 10 years of experience in OCT design and manufacturing, Thorlabs has gained a great appreciation for the unique and often complex requirements OCT imaging applications demand. To address the individual needs of such applications, we have transformed our OCT systems into highly modular and configurable units. Modular designs, flexible configurations, and a wide variety of components and accessories allow Thorlabs OCT systems to be seamlessly integrated into any laboratory environment. We encourage customers to partner with our dedicated OCT application engineers to identify the optimal system configuration that meets their individual imaging requirements. Additionally, we have dedicated lab space in our Newton, NJ and Lübeck, Germany facilities where our engineers can configure an ideal OCT system and test it under specific application conditions. After testing, we provide comparative data to further guide the decision making process. For larger feasibility studies, Thorlabs also offers extensive support to validate OCT imaging processes and provides statistical data for larger sample quantities. Please contact us to discuss such potential projects. Thorlabs Headquarters in Newton, New Jersey Thorlabs Office in Lübeck, Germany If you would like to arrange for sample testing and a technical consultation, have any questions or feedback, or need a quote, please contact us at OCT@thorlabs.com. Thorlabs Japan Demo Room

16 Striking a Balance... Thorlabs offers a wide variety of OCT systems, each one specifically designed to optimally balance its all-around performance. While we strive to push the limits in OCT capabilities, there are often tradeoffs that need to be made with regards to performance. The most common tradeoffs are among A-Scan Line Rate, Axial Resolution, and Imaging Depth Range. Below we have illustrated where each of our OCT base units lie on a scale for these three parameters. Thorlabs Base Unit A-Scan Line Rate Thorlabs Base Unit Axial Resolution in Tissue (n=1.4) Thorlabs Base Unit Imaging Depth Range in Air (n=1.0) OCS1310V2-BU 200 khz OCS1310V1-BU 12 mm OCS1310V2-BU 13 µm OCS1310V1-BU 11.4 µm OCS1310V1-BU TEL1325LV2-BU TEL1300V2-BU 100 khz Up to 76 khz TEL1325LV2-BU 8.6 µm TEL1325LV2-BU 7 mm GAN930V2-BU GAN905HV2-BU Up to 36 khz CAL930V1-BU GAN930V2-BU TEL1300V2-BU 5 µm 4.3 µm 3.9 µm OCS1310V2-BU TEL1300V2-BU GAN930V2-BU 5 mm 3.5 mm 2.9 mm CAL930V1-BU 1.25 khz GAN905HV2-BU 1.9 mm GAN905HV2-BU 2.1 µm CAL930V1-BU 1.7 mm 56 Sparta Avenue Newton, New Jersey Sales: Fax: USA Thorlabs Imaging Systems Phone: Thorlabs Scientific Imaging (TSI) Phone: Thorlabs Quantum Electronics (TQE) Phone: UK Phone: +44 (0) GERMANY Phone: +49 (0) FRANCE Phone : +33 (0) China Phone: +86 (0) SWEDEN Phone: Polish Direct Line: JAPAN Phone: BRAZIL Phone: +55 (16)