Interferometers
Combine waves to reveal their properties by measuring the pattern of interference.
See Also: Beam Splitters
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Product
Light Analysis
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Welcome to Thorlabs; below you will find links to detectors and instrumentation that measure the various properties of light, a subset of our entire line of photonics products. Thorlabs offers an extensive selection of instruments that measure the properties of light. Our versatile power and energy meters can be used with over 25 different sensors in order to make NIST-traceable power and energy measurements. If the convenience of a meter is not desired, our selection of detectors includes basic photodiodes (uncalibrated and calibrated), photodetectors (biased, amplified, and avalanche), CCD and CMOS arrays, position detectors, integrating spheres, and photomultiplier tubes. The Beam Characterization category contains beam profilers (camera and scanning slit), a wavefront sensor, spectrometers, and interferometers, while the Polarimetery link leads to a selection of instruments used to measure and control the polarization of light.
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Product
Interferometers and Reflectometers for Plasma Diagnostics up to 170 GHz
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Elva-1 supplies different solutions for measurement density and temperature profiles of plasma. Our systems are installed practically on all TOKAMAKs over the World.
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Product
Receiver
10780C
Receiver
The Keysight 10780C is a highly-sensitive, lowest-cost Keysight receiver used with laser interferometer positioning systems. One receiver is used per measurement axis (including wavelength tracker). Configured with Keysight electronics, laser heads, cables and optics, the Keysight 10780C receiver allows you tailor a precise positioning system for your exact application requirements.
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Product
Ultra-High Resolution Spectrometers
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Fabry-Pérot interferometers are optical resonators used for high-resolution spectroscopy. They use the phenomenon of multiple-beam interference that results when light shines through a cavity bounded by two reflective parallel surfaces. When the light hits one of the surfaces, some is transmitted out, and the remaining part is reflected back. Fabry-Pérot produces a circular fringe pattern, similar to the Michelson pattern. However, the fringes are thinning, brighter, and more widely spaced. As a result, these instruments are able to detect and resolve the fine features of a transmission spectrum with high precision.
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Product
Digital Automated Interferometer for Surface Inspection
DAISI
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DAISI (Digital Automated Interferometer for Surface Inspection) achieves the high workability and repeatability with the features such as auto-focus function, auto-calibration function and auto connector fixing system.
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Product
Retroreflector
10704A
Retroreflector
The Keysight 10704A retroreflector (cube corner) is a measurement reflector for single-beam measurements. It is paired with the Keysight 10705A single beam interferometer and is designed for making limited space, single-axis measurements. If mass is critical, the Keysight 10704A is available without housing as the Keysight 10713C, and for extremely critical mass requirements, the Keysight 10713D 1/4-inch base retroreflector can be used.
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Product
10G DPSK Demodulator
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Optoplex’s Optical DPSK Demodulator, also known as Delay Line Interferometer (DLI), converts phase modulation to amplitude modulation over the entire C+L band in support of data transmission rates of 2.5,10 or 40 Gb/s. The DPSK demodulator is designed for phase modulated optical communication systemsutilized in commercial, defense and space exploration markets. The device plays a key role in improvingsignal quality and performance to meet the expanding demand for higher data rates and more complextransmission formats within current and next generation systems without major capital expenditure.Optoplex’s DPSK Demodulator is based on a patented free-space optical design, which is compact, athermal and polarization-independent. The measured frequency drift over temperature is only ~0.02 GHz/°C for our standard passive device. Further, this DPSK Demodulator exhibits a total polarization-dependent phase shift of less than 2 degrees over the entire operating temperature range with a high extinction ratio. Optoplex’s DPSK Demodulators can be configured to be fully tunable, colorless tunable or purely passive. Dual-Rate DPSK Demodulator is also available.
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Product
Optical Systems
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Thorlabs' optics can be incorporated together to create packages with new functionalities. Some of the packages highlighted here range from beam expanders and collimators to interferometers and spectroscopy kits. Optical isolators, Pockels cells, and modulators are other examples.
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Product
Retroreflector
10767A
Retroreflector
The Keysight 10767A Linear Retroreflector is one component in a family of measurement optics that tailor interferometer systems for the physical layout and measurement requirements of each application. When configured with appropriate Keysight5530 Laser Calibration System components, 10767A becomes part of a precise positioning system that improves product quality, increases yields, and facilitates the manufacture of precision products.
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Product
Fourier Transform Optical Spectrum Analyzer, 350 - 1100 nm
OSA201C
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Thorlabs' Optical Spectrum Analyzers (OSAs) perform highly accurate spectral measurements. Compatible with fiber-coupled and free-space light sources, these compact benchtop instruments suit a wide variety of applications, such as analyzing the spectrum of a telecom signal, resolving the Fabry-Perot modes of a gain chip, and identifying gas absorption lines. Many commonly available OSAs use grating-based monochromators, which have slow acquisition times due to the need to mechanically scan the grating and average out noise at each wavelength. Thorlabs' OSAs acquire the spectrum via a Fourier transform using a scanning Michelson interferometer in a push/pull configuration. This approach dramatically improves the acquisition time, enables a high-precision wavelength meter mode with 7 significant figures and ±1 part-per-million accuracy, and allows the included software to provide robust statistical analysis of the acquired spectra, as explained in the Design tab.
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Product
Three Axis Interferometer
10736A
Differential Interferometer
The Keysight 10736A Three Axis Interferometer is used in multiple axis applications where linear and angular control of the stage is required. It combines in a single package the functionality of an optical bench with multiple beam benders, beam splitters, and three interferometers. The interferometers split an incoming laser beam into three beams to measure linear distance, pitch and yaw, or linear distance, roll and yaw. Three linear measurements provide the basis for calculating two angular measurements. The inherent beam parallelism ensures that there is essentially no cosine error between the three measurements and also ensures angle accuracy for pitch and yaw measurements. Other characteristics include:
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Product
Laser Head
5517GL
Laser Head
The Keysight 5517GL is used primarily in VME and PC based laser interferometer systems where the velocity of motion is faster, such as semiconductor lithography and flat panel applications. Please contact Keysight for custom requirements.
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Product
PCI Three-Axis High Performance Laser Board with External Sampling
N1231B
Laser Board
The Keysight N1231B PCI Three-Axis Laser Board with External Sampling is a register based PCI bus board that implements three axes of laser interferometer measurement for position monitoring and closed-loop servo control. There are four external sample inputs along with four data hold inputs that allow easy synchronization with user systems. Several threshold compare registers, with both hardware outputs and interrupt capability, can be used for travel limit and in window or out of window detection functions. The dual mode hardware position outputs, controlled by the hold inputs, provide either a 32-bits/axis parallel interface or a 36-bit multiplexed interface to the 36-bit axis position data at rates up to 20MHz. The user can programmatically access the externally sampled position and velocity data, as well as software sampled position and velocity data, over the PCI bus at rates up to 100kHz (3 axes of position and velocity) or 200kHz (position or velocity only).
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Product
Erbium Fiber Frequency Comb
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Detailed description of item: The AOSense frequency comb is a low noise, polarization maintaining (PM) device. Key features include a PM fiber architecture centered at 1550nm with turnkey modelocking; a free-running linewidth of the carrier-envelope offset frequency of <200 kHz; a temperature-insensitive all-fiber f-2f interferometer exhibiting fceo beatnotes with SNR > 45dB (300kHz RBW); and dual fast/slow cavity length actuators with a bandwidth of >300 kHz. The repetition rate of the comb is factory set and allows matching across multiple combs for dual comb applications. The optics package incorporates an optical heterodyne module designed for locking to the comb to an ITU-specified laser reference. The comb is capable of supporting an Allan deviation of < 5 x 10-18 at 1 second and ~10-20 after 105 seconds. Add-on features include all fiber extensions to visible wavelengths corresponding to several atomic transitions. An integrated comb electronics package is currently under development.
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Product
Single Axis Interferometers
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Linear, single-beam, and plane mirror interferometers measure motion on a single axis.
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Product
Ultimate Shaft Measuring Gage with Laser Interferometer
1200LX
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The Adcole Model 1200-LX is a high-speed, high-precision gage designed to measure crankshafts, camshafts, pistons, and other cylindrical components in demanding production environments. Simple to operate, with comprehensive, easy-to-understand pass/fail output reports, the Model 1200-LX is vital for verifying part tolerances, minimizing scrap, flagging potential quality issues, qualifying grinders and machining tools, and helping to eliminate quality breaches.
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Product
Portable Connector End Face Geometry Interferometer
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Thorlabs’ Vytran® Connect-Chek® Interferometer automatically and precisely measures radius of curvature, apex offset of polish, and fiber undercut or protrusion on any PC or APC, single-fiber connector. The CC6000 interferometer uses a non-contact tilted-phase-analysis technique for fast, reliable measurements of connector end faces. This compact interferometer has a carrying handle and must be attached to a desktop or laptop computer (not included) with a standard USB 2.0 port for operation. The included CC6000 software, which is used to control the interferometer, can be installed on a computer with the minimum requirements in the table below. Designed for use in both the factory and the field, this interferometer provides crucial quality information needed to assure long-term performance of fiber optic connectors. One CC250P Mount for Ø2.50 mm PC Connectors and one RT250P Reference Tool for calibrating the CC250P mount are included with the CC6000 interferometer; mounts and reference tools that enable measurement of other PC or APC, single-fiber connectors are available separately below. When used with an appropriate mount for APC connectors, the CC6000 interferometer is also capable of measuring the APC angle and key error.
