Michelson interferometer is a widely used instrument for measuring wavelength of light, refractive index of transparent materials etc. In Holmarc's Apparatus (Model No: HO-ED-INT-06P), Michelson Interferometer is used as 'Optical Ruler' to calculate the displacement factor of piezoelectric actuator in accordance with the Piezoelectric Effect. An applied voltage will cause a piezoelectric actuator to exhibit a tiny mechanical displacement(typically in nanometer).
The displacements are measured using the beam of light from a diode laser (650nm) in the Michelson Interferometer to calculate the minute motions. The applications of the Piezoelectric effect has reached almost every fields of science and technology, being utilized in advanced disciplines such as the atomic force microscopy, all forms of vibration suppression etc.
To observe the Piezo Electric Effect
To obtain the displacement factor by counting the fringe shift
Research grade optical components
Flexible, modern and user friendly design
Precision kinematic mounts for fine tuning and alignment
Holmarc's Michelson Interferometer-piezoelectric effect uses two mirrors in a Michelson arrangement to obtain the interference pattern. The interferometer is assembled with a Piezoelectric Actuator on a movable mirror. When the voltage across the Piezoelectric Actuator is increased from zero to maximum gradually, we can observe shift in the fringe pattern. One can determine the fringe shift and hence the displacement produced by the Piezoelectric Actuator can be calculated.
The instrument uses laser diode as light source. Assembly and alignment are easy to understand. Laser, mirrors and beam splitter are mounted on precision kinematic mounts for fine tuning and alignment. The interference fringes are obtained on a screen and can be viewed with naked eye. Due to the Piezoelectric Effect, one of the mirrors is shifted by the variation in the voltage applied to the sample, and the change in interference pattern is observed. Students can assemble the interferometer out of individual modules by fixing them on the optical breadboard. All components required for such assembly, including screws and allen keys, are supplied with the package.
Features of Piezo Electric Actuator
Compact size, accurate positioning in nm, high speed response and large blocking force
High energy conversion efficiency, low power consumption and absence of electromagnetic noise
Easy to be controlled by voltage variations
A piezoelectric actuator converts an electrical signal into a precisely controlled physical displacement (stroke). If displacement is prevented, a useable force (blocking force) will develop. The precise movement control afforded by piezoelectric actuators is used to finely adjust machining tools, lenses, mirrors, or other equipment. Piezoelectric actuators are also used to control hydraulic valves, acting as small-volume pumps or special-purpose motors and in other applications requiring movement or force. When an electric field is applied across the material, the polarized molecules will align themselves with the electric field, resulting in induced dipoles within the molecular or crystal structure of the material. This alignment of molecules will cause the material to change dimensions. This phenomenon is known as electrostriction. This can be utilized by engineers to develop instruments for measuring exact displacement factors. They can use this knowledge to apply exact voltages and produce nanometer displacements with an incredibly small margin of error. Knowing this is immensely important, especially in the ever growing field of nano-technology, where the smooth movement of a piezo electric actuator would be able to move minute parts and manufacture tiny materials.
Ours is an organisation dedicated for the design, development and manufacture of optics, opto-mechanics, educational products and positioning devices.
We have in-house infrastructure capabilities for all the processes involved in the manufacture of our products. This helps us to have total control of quality in our products and services.
Our core competency is in prototype development and low volume production of opto-mechanical devices and systems where skilled labour is the major input. Our location in INDIA enables us to be the most cost effective in this field of activity compared to any other company in the world.
The products described in this website constitute only the standard items we manufacture for research and industrial market. One of our major activity is in OEM market where we develop and supply low volume opto-mechanical devices & positioning as per custom design. We also undertake contract manufacturing of opto-mechanical products in standard and custom specifications.
We try improving the quality of our products for every consignment we dispatch. Our customers can expect to receive better products each time a purchase order is placed with us.
Our strength is our satisfied customers worldwide. We request your continued support in our endeavor to serve you better.
We value the feedback on our products and services. Please mail us to email@example.com
We thank you for taking time to visit our website and await for an opportunity to be at your service in near future.
Purchase Orders: Written, faxed and e-mail purchase orders are accepted. All orders require immediate written confirmation.
Product warranty: Our warranty for all our mechanical components and systems are ONE year from the date of shipment. Repair or replacement will be made free of charge for products with defects in material and workmanship during this period. For our optical components, our warranty is 30 days from the date of shipment. Defective items will be replaced free of cost. The customer must notify any defect in optical components within 48 hours of receipt. For all warranty replacement, a written statement with an authorized signature indicating the reason for rejection attaching test reports are requested to accompany the returned parts. All defective items must be returned in their original shipping container within 10 days of the date of shipment.
Quotations: All quotations are valid for 90 days from the date of issue.
Payment: 100% Advance payment prior to dispatch. Customers paying by international wire transfer must prepay all bank charges including all charges imposed by correspondent or intermediary banks.
Shipping & Delivery: The shipping costs, Custom Duty and any (if) landing taxes etc will be extra. The date of delivery is only an estimate and we will have no liability for late or partial deliveries. we may refuse any order for any reason. Catalog items are normally shipped immediately from inventory. In the event that the items is out of stock, an estimated delivery date is given at the time of order. Most items can be shipped within 45 days.
Installation: Onsite installation of our equipment's can be provided on buyer's account.
Specifications: HOLMARC reserves the right to modify, change or otherwise improve all items in the catalog specifications without prior notice.
Taxes: We collect general sales tax on shipments, unless the purchaser supplies us a signed official sales tax exemption certificate with the order. Purchase made outside our region are subject to state or local sales/ use tax, if any and other taxes payable by reason of this transaction.
Repairs: If your unit is out of warranty but needs repair, please contact us with details regarding the damage.