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The future development trend indicates the continued use of femtosecond laser micromachining together with the techniques such as fusion splicing flame brushing and others to fabricate combined microstructures on optical fibers to realize miniature robust and multifunctional optical fiber devices. As an excellent micromachining method femtosecond laser ablation is more and more frequently used in micromachining.

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The short duration of a femtosecond pulse leads to high peak powers and very high intensities even for low pulse energies.

Femtosecond laser micromachining pdf. Laser micromachining 2 process are soaring in the recent days and its potential merits add a significant impact in its application areas. Microprocessing is an expanding market for laser sources both displacing non laser processes and opening new applications. The important feature of femtosecond laser is the speed at which the light is fired and focused ultrashort pulses order of femto sec. Pdf micromachining experiments were performed with tisapphire laser pulses 130 fs 150 fs 800 nm approximately 10 hz in air. Current status and applications nadeem h. Laser micromachining technologies have revolutionized manufacturing in microelectronics semiconductor photovoltaics led medical device fabrication and many other industries. High aspect ratio 10 microholes are made in 1 mm thick steel plates. Demonstrated using femtosecond laser pulses either delivered through a hollow core fiber or focused by a lens. Femtosecond laser technology systems use neodymium. 1 laser micromachining the microchannels were fabricated by femtosecond laser micromachining of fused silica glass substrates. Due to this the light can be focused at a 3 um spot size. Its high beam quality portable installation size high. Rizvi exitech limited oxford industrial park yarnton oxford ox5 1qu united kingdom abstract femtosecond lasers currently show much promise as potential sources of choice in a number of laser micromachining applications including biomedicine photonics and. When focussed by a microscope objec. The use of hollow fiber will definitely benefit some micromachining applications where conventional optics may.

Employing the direct focusing technique highly absorbing. Glass 1053nm near infrared wavelength light. Femtosecond laser ablation can take residual stresses beside the machining. Femtosecond laser micromachining has emerged in recent years as a new technique for micronano structure fabrication because of its applicability to virtually all kinds of materials in an easy one step process that is scalable.