PICALO 2006 Paper #M404 (Optical Surface Profilometry of Low Reflectance Materials - Evaluation as a Laser Processing Diagnostic)

Optical Surface Profilometry of Low Reflectance Materials – Evaluation as a Laser Processing Diagnostic
Authors:
Adam Joyce, Department of Physics; Sydney Australia
Deb Kane, Macquarie University; Sydney Australia
Presented at PICALO 2006

Optical surface profilometry is a technique which has advantages over other profilometry techniques (stylus profilometry, AFM) of being non contact and being able to profile comparatively large areas in a single "z-scan". Thus, it is employed in monitoring surface quality and measuring surface form in high technology manufacturing processes and quality assurance, as well as in research and development contexts. Its application to optical materia...

PICALO 2006 Paper #M402 (Micro Joining and Cutting with a Single Mode Fiber Laser)

Micro Joining and Cutting with a Single Mode Fiber Laser
Authors:
Mohammed Naeem, GSI Group, Inc.; Rugby Great Britain
Presented at PICALO 2006

Since the early developments of laser micro machining, the lamp pumped pulsed Nd: YAG laser has been the source of choice. Single mode fiber lasers have recently emerged as potential alternative sources for laser micro machining. These lasers with diffraction limited beam quality offer many advantages such as small spot size, high power density, enhanced processing speeds, reduced heat affected zone for both cutting and joining applications respectively. In this work, we will provide cutting and welding data achieved with a 100W single mode fiber for a ...

PICALO 2006 Paper #M401 (A User-friendly Simulation Tool to Facilitate Writing of Complex Part Programs for Laser Micromachining)

A User-friendly Simulation Tool to Facilitate Writing of Complex Part Programs for Laser Micromachining
Authors:
Richard Hume, IRIS, Swinburne Univ. of Technology; Deepdene, Victoria Australia
Jason Hayes, IRIS, Swinburne Univ. of Technology; Hawthorn, Victoria Australia
Pio Iovenitti, IRIS, Swinburne Univ. of Technology; Hawthorn, Victoria Australia
Presented at PICALO 2006

Excimer micromachining tools used to produce micromachined parts are often controlled by manually written numerical control (NC) part programs in RS-274 "G" and "M" codes, or NC-code. The manual creation of the part programs in NC-code is a time-consuming process for users and relies on their exper...

PICALO 2006 Paper #M307 (Nanostructured ZnO Thin Films Prepared by Pulsed-laser Deposition)

Nanostructured ZnO Thin Films Prepared by Pulsed-laser Deposition
Authors:
Henry Peng, GE Global Research Center (Shanghai); Shanghai Peoples Republic of China
Peng Li, GE Global Research Center (Shanghai); Shanghai Peoples Republic of China
Presented at PICALO 2006

Zinc oxide is a versatile material with excellent optical, electrical and piezoelectrical properties and has been applied to antireflection coatings, transparent electrodes in solar cells, surface acoustic wave devices, pyroelectric devices, gas sensors, varistors and electro- and photoluminescent devices. Nanostructured ZnO thin films can be achieved by pulsed-laser deposition. Key processing parameters of chamber pres...

PICALO 2006 Paper #M305 (Superprism Phenomena in 3D Photonic Crystals Fabricated by Two-photon Polymerisation)

Superprism Phenomena in 3D Photonic Crystals Fabricated by Two-photon Polymerisation
Authors:
Jesper Serbin, Swinburne University of Technology; Hawthorn Australia
Min Gu, Centre for Microphotonics and CUDOS, Swinburne University of Technology; Hawthorn Australia
Presented at PICALO 2006

Since the publications of E. Yablonovitch and S. John on the optical properties of periodic, dielectric structures in the year 1987 there have been intensive research efforts related to the design and new methods for the fabrication of functional photonic crystal devices. Many of these investigations addressed the realization of high refractive index structures possessing a complete photonic band g...

PICALO 2006 Paper #M304 (Fabrication of Periodic, Resonant Features in Optical Fibres Using a CO2 Laser Micro-tapering System)

Fabrication of Periodic, Resonant Features in Optical Fibres Using a CO2 Laser Micro-tapering System
Authors:
Douglas Little, Macquarie University; Sydney Australia
Graham Marshall, Macquarie University; Sydney Australia
Michael Withford, Macquarie University; Sydney Australia
Presented at PICALO 2006

We report on novel devices fabricated using an optical fibre micro-tapering facility based on a CO2 laser and high precision translation stages, all of which are computer controlled. The use of a laser to heat the fibre is advantageous over standard flame-tapering systems as it allows greater control over the tapering parameters, namely the size of the irradiated zone, th...

PICALO 2006 Paper #M303 (Nano Imprinting of Polymer Planar Waveguide Bragg Gratings)

Nano Imprinting of Polymer Planar Waveguide Bragg Gratings
Authors:
V. Sivan, Royal Melbourne Institute of Technology and Science; Melbourne Australia
G. Kostovski, Royal Melbourne Institute of Technology and Science; Melbourne, VIC Australia
P. Wilksch, Royal Melbourne Institute of Technology and Science; Melbourne Australia
A. Holland, Royal Melbourne Institute of Technology and Science; Melbourne Australia
Arnan Mitchell, RMIT University; Melbourne, VIC Australia
Presented at PICALO 2006

A nano-imprinting technique for fabricating polymer planar waveguide Bragg gratings operating at 1550nm is presented. The Bragg grating is written on photo...

PICALO 2006 Paper #M302 (Active Devices Fabricated in Bulk Glass via Femtosecond Laser Pulses)

Active Devices Fabricated in Bulk Glass via Femtosecond Laser Pulses
Authors:
Graham Marshall, Macquarie University; Sydney Australia
James Piper, Macquarie University; Sydney Australia
Martin Ams, Macquarie University; Sydney Australia
Michael J. Withford, Macquarie University; Sydney Australia
Presented at PICALO 2006

With the goal of fabricating photonic devices for optical networking applications, significant attention has recently been directed to the use of femtosecond laser pulses for inscribing optical components inside transparent materials. In 1996 it was shown that tightly focused infrared femtosecond laser pulses induced a refractive index chan...

PICALO 2006 Paper #M301 (Fabrication of C-Band Resonant Structures in Rib Waveguides)

Fabrication of C-Band Resonant Structures in Rib Waveguides
Authors:
Andrew Lee, Macquarie University; Sydney Australia
Presented at PICALO 2006

With the drive towards fabrication of "on-chip" optical technologies, there is a need to develop effective, compact, optical components. In this paper we present results on the fabrication of rib waveguide structures using SU8 which are then processed using direct laser ablation to rapidly prototype functional devices (operating in the communications band) such as Bragg filters and two dimensional photonic crystals. Laser ablation allows excellent control of the positioning and depth of ablated features within the waveguide, allowing us to tailor the r...

PICALO 2006 Paper #M208 (Chirped-pulse Oscillators for Micro- and Nanomachining Applications)

Chirped-pulse Oscillators for Micro- and Nanomachining Applications
Authors:
Alexander Fuerbach, Macquarie University; Sydney Australia
Andreas Isemann, Femtolasers Produktions GmbH; Vienna Austria
Alma Fernandez, Max-Planck-Institute of Quantum Optics; Garching Germany
Andreas Assion, Femtolasers Produktions GmbH; Vienna Austria
Roswitha Graf, Max-Planck-Institute of Quantum Optics; Garching Germany
Alexander Apolonski, Max-Planck-Institute of Quantum Optics; Garching Germany
Presented at PICALO 2006

Laser micromachining using femtosecond pulses, is a most promising and versatile technique, having a variety of applications. The m...