Educational Equipments

Products >> Educational Equipments

The educational products described in this website are the results of years of experience in manufacturing various optical instruments for research and industrial applications for our clients. We have made a deliberate attempt in the design of these apparatus to keep all components and modules open as far as possible. This approach helps students to gain deep understanding and in most cases provide them hands on experience in setting up the experiments.

All components and modules used in our educational products are of highest quality comparable to the best in the world. The design of experiments are in tune with the state of the art trends in the field. Our expertise in the integration of optics, mechanics and electronics are fully made use of in all these apparatus and equipments.

Geometrical Optics	Diffraction	Lasers & Opto-Electronics	Interferometry
Polarization	Fiber Optics	Spectroscopy	Holography

Geometrical Optics

This apparatus consists of a graduated vertical post with rigid base along with laser diode and required optics. A pointer illuminated with the laser diode is mounted on the vertical post.

Geometrical Optics-Basic Kit

Geometrical Optics-Basic kit is developed for general physics education in universities and colleges. It includes 120cm-long graduated optical bench with carriers. The optical components such as lenses, mirrors, laser, etc.

Geometrical Optics-Comprehensive Kit

Geometrical optics-comprehensive kit contains everything that a student needs to perform variety of precise optical experiments. 150cm long graduated rail and carriage system securely holds optical devices

Diffraction

Screen Based Apparatus for Diffraction Experiments

This apparatus is meant for studying diffraction when laser light passes through a diffracting element. The device consists of diode laser and diffracting element conveniently mounted on a solid alumnium rail with two carriages.

Detector Based Apparatus for Diffraction Experiments

This apparatus is meant for graduate and post graduate level courses in physics. In this apparatus, diffraction pattern is closely studied using a detector mounted on a translation stage.

Biprism Diffraction Apparatus

Fresnel bi-prism has one of its angles slightly lesser than 180 degree and two other base angles equal and small. Bi-prism produces interference pattern from a single source due to the creation of two coherent sources

Ultrasonic Diffraction Apparatus - Laser Based (Acousto-Optic Effect)

The ultrasonic diffraction setup uses laser as light source. As the laser beam is intense and monochromatic, we get clear higher order diffraction pattern. The laser head is mounted by a kinematic holder.

Goniometer Based Apparatus for Diffraction Experiments

This apparatus consists of a Goniometer with 1 arc min resolution for measuring diffraction angle directly and a precision adjustable slit through which laser beam passes before falling on a diffracting element.

Lasers & Opto-Electronics

Apparatus for the Characteristic Study of Diode Laser

The detector is scanned linearly using the translation stage along the cross section of the laser beam noting down intensity readings at close intervals. A graph is plotted from the readings for finding out attributes like Gaussian nature etc.

Apparatus for Opto-Electronics Characterization

The apparatus consists of a diode laser (without collimating optics) and sample mount to which any of the opto-electronic devices can be held conveniently. Both the source and the sample detector are placed on rail and carriage system.

Laser Optics LAB

Holmarc's laser optics lab is designed to carry out many of the experiments described in various chapters of this brochure. It is also useful for performing innovative experiments and carrying out optics related student projects.

Opto - Electronics Kit

Opto-electronics kit can be used to perform more than 20 experiments in optics. It covers all the major topics in opto-electronics and laser. Experimental setups can be easily assembled on an optical breadboard.

Standard Laser Kit

Standard laser kit is similar to opto-electronics kit, but optical fiber experiments and characteristics study of detectors are excluded. Experiments like polarization, Brewster’s angle determination etc. are included.

Interferometry

Newton’s Rings Apparatus

In this experiment, principles of interference of light are used to determine the wavelength of a light source. The interference fringe obtained here is a pattern of concentric circles, the diameter of which is measured using a traveling ...

Cornus Interference Apparatus

The objective of this experiment is to determine Poisson’s ratio and Young’s modulus for different materials (glass and perspex) using interference method. Sodium vapor lamp is used as light source.

Fabry-Perot Interferometer - Projection

In Fabry-Perot interferometer, the distance between partially reflecting mirrors are varied by using coarse and fine translation stage driven by micrometers in order to get precision measurements.

Fabry-Perot Interferometer (computer interfaced)

The advantage of computer interface is that the pattern can be saved for future analysis. In addition, measurements can be taken directly from the monitor using a software module available.

Fabry-Perot Etalon

Holmarc’s Fabry-Perot etalon is made of plate beam splitters separated by a distance. The beam splitters are made by coating aluminium thin films on optically polished N-BK7 substrate.

Michelson Interferometer

Michelson interferometer is a widely used instrument for measuring the wavelength of light, refractive index of transparent materials etc. The interferometer is designed and constructed in modular fashion.

Michelson Interferometer - Sodium D’ Lines

In this model of Michelson interferometer, sodium vapor lamp is used as light source. Other than collimating optics for source light, mirrors and beam splitters are all same as in the case of laser based Michelson interferometer

Mach-Zehnder Interferometer

Refractive index of air can be measured very accurately with this interferometry setup. Special cell is constructed for filling the air. Test cell is placed in one of its optical arms of the interferometer.

Shear Plate Interferometer

The shearing interferometer is an extremely simple method to observe interference. The laser source should have a coherence length which is longer than the thickness of the shear plate so that the basic condition for interference is fulfilled.

Fizeau Ineterferometer

Most widespread interferometer, Fizeau enables measurements of flat and spherical surfaces using non contact configuration. Its reference and measurement optical paths are the same, making this a compact, vibration-resistant system.

Speckle Pattern Interferometry

Speckle Pattern Interferometry (SPI) determines the difference between two small deformation states of the same inspected object. Speckle-pattern-interferometry shows a fringe pattern,

Polarization

Brewster’s Angle Apparatus

This equipment uses goniometer and a pinhole photodetector to determine the Brewster’s angle and to study polarization of reflected light. Intensities of the reflected light polarized in the plane of incidence and perpendicular to the plane

Malus Law Apparatus

In this experiment, Malus law of polarization is verified by showing that the intensity of light passed through two polarizers depends on the square of the cosine of the angle between the two polarization axes.

Polarization Demo Kit

This apparatus help students to understand the principles and applications of polarization and investigate the applications of polarizing materials. The polarized light interacting with materials produces a number of optical effects.

Faraday Effect Apparatus

The Faraday effect or Faraday rotation is an interaction between light and a magnetic field. The rotation of the plane of polarization is proportional to the intensity of the component of magnetic field in the direction of beam of light.

Kerr Effect Apparatus

The apparatus make use of the rotation of polarized light by a Kerr cell (the material exhibiting the Kerr effect). The light is passed through a polarizer, then sent to the Kerr cell and finally made to fall on a photodetector.

There are some particular crystals showing change in refractive indices directly proportional to applied electric field. The phenomenon is called linear electro-optic effect or Pockel effect.

Ellipsometry is a very sensitive optical technique which provides unequaled capabilities for thin film metrology. Ellipsometry exploits phase information and polarization state of light and so can achieve angstrom level resolution.

Any material that literally rotates the polarization direction of light moving through it is said to be optically active. Some active materials change the state of polarization from linear to circular or perpendicular to linear and back again

Fiber Optics

Optical Fiber Characterization & Communication Kit

Optical fiber characterization and communication experiment kit is designed for teaching various principles of optical communication and fiber characteristics. It includes digital transmission method, fiber optic attenuation

Optical Fiber Characterization Apparatus (Rail based)

The apparatus makes use of multi-mode optical fiber and red diode laser (650nm, 3mW) for performing experiments. In the model HO-ED-F-02, components like laser, fiber coupler, fiber holder, detector stage, etc.

Optical Fiber Characterization Apparatus (Breadboard based)

In the model HO-ED-F03, Components are mounted on optical breadboard for performing experiments. The use of optical breadboards makes the system flexible and helps to setup many other experiments

Optical Fiber Communication Kit

All the major fiber communication experiments can be performed with this kit. LED-fiber coupler is used for coupling of optical fibers with detector and LED. The X-Y positioners used for coupling source

Spectroscopy

Spectrometer Goniometer

This instrument is specially designed for educational application and used for studying spectrum of different light sources as well as for characterization of components like prisms and gratings.

Constant Deviation Spectrometer

This PC based spectrometer is designed and constructed for educational spectroscopic applications. The use of detector for imaging makes it more convenient and user friendly compared to film based spectroscope.

Scanning Spectrometer

The scanning spectrometer collects spectral data from 350nm to 960nm wavelength range. It measures absorbance vs. wavelength for liquid samples and intensity vs. wavelength for emission source.

The instrument is made user friendly by incorporating LCD display and keyboards. Input and output port of the monochromator is fitted with precise, micrometer controlled variable slits. Mirrors are kinematically mounted for fine tuning

Zeeman Effect Apparatus

Zeeman effect, splitting of spectral lines under a magnetic field, has been widely acknowledged to be an important phenomenon to be experimented by Physics students. It offers deep understanding in atomic physics and quantum mechanics

Laser Raman Spectrometer

Laser Raman Spectrometer which we manufacture with commercial Model no: HO-ED-S-06 is primarily meant for post graduate courses in Physics and Engineering, it can be used as a laboratory analyzing tool as well.

Holography

Hologram Demo Kit

The objective of this apparatus is to demonstrate transmission holograms in class room and laboratory. Fringe pattern in the hologram appears meaningless to the naked eye.

Holmarc's holographic kit is a professional set up for shooting holograms in academic and research institutions. The equipment includes vibration isolated table, optomechanical modules, optical components etc.

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