Laser metrology ppt

The laser beam is visible and it can be observed easily. This is used for very accurate measurements of the order of 0. Wave output laser that emit visible or infrared light. Metrology Lasers are widely used in optical metrology , e. Laser scanners are based on collimated laser beams, which can read e.

Frequency Scanning Interferometry (FSI) Absolute measurements.

Used for several projects in Oxford.

Ratio of phase advance is equal to the ratio . Why measure laser output power? Case: High fiber optic power measurement. One of the fundamental measurements. UNIT III ADVANCES IN METROLOGY Basic concept of lasers , advantages of lasers – laser interferometers – types – DC and AC lasers interferometer – Applications – Straightness – Alignment, Basic concept of CMM – Types of CMM – Constructional features – Probes – Accessories – Software – Applications – Basic . Drag-free technology (including sensors and micro-thrusters), charge management system, thermal diagonostic and thermal control, and laser optics are the technology common to all. Time delay interferometry is the technology common to LISA and ASTROD.

Laser metrology is the technology common to DECIGO and . Coefficient of thermal expansion (CTE) c. Our frequency chirps cover bandwidths up to nearly 5 . Ping Yan, Xuejiao Wang, Dan Li, Yusheng Huang, Junyi Sun, Qirong Xiao, and Mali Gong. Non-contact Target-less Features. A long-term standard in industrial metrology : Laser Tracker Systems lead the field in terms of the accuracy, reliability and durability of portable coordinate measuring machines.

Coordinate Measurement System Committee.