Laser diffusion has been widely used to modify the metallurgical composition at the surface of materials for improving the mechanical, optical and electromagnetic properties. In order to have a uniform heating for the substrates, a beam shaping lens is designed for transforming a Gaussian laser beam to a flat-top laser beam. Pt atoms have been incorporated into Ti and Ta sheets and the transmitted magnetic field (63.86 MHz) strengths are measured to determine the transmittance of the samples. The treated Ti samples have lower transmittance than the as-received Ti samples due to increased electrical conductivity. The treated Ta samples, on the other hand, have higher transmittance than the as-received Ta samples due to reduced electrical conductivity. The increased electrical conductivity may be due to the diffused Pt atoms and the decreased electrical conductivity may be due to the increased oxygen atoms. Regarding the polarization effect, the samples irradiated by linearly polarized laser beam have higher Pt concentration and exhibit more changes in the transmittance.
Skip Nav Destination
International Congress on Applications of Lasers & Electro-Optics
October 14–18, 2018
Orlando, FL, USA
ISBN:
978-0-912035-96-3
PROCEEDINGS PAPER
Effects of polarization on laser diffusion and materials modification
Sen-Yong Chen;
Sen-Yong Chen
1
Laser-Advanced Materials Processing Laboratory CREOL, College of Optics and Photonics, University of Central Florida
, 4000 Central Florida Blvd, Orlando, FL 32816
Search for other works by this author on:
Othmane Benafan;
Othmane Benafan
2
NASA Glenn Research Center
, Structures and Materials Division, Cleveland, OH 44135, USA
Search for other works by this author on:
Aravinda Kar;
Aravinda Kar
1
Laser-Advanced Materials Processing Laboratory CREOL, College of Optics and Photonics, University of Central Florida
, 4000 Central Florida Blvd, Orlando, FL 32816
Search for other works by this author on:
Raj Vaidyanathan
Raj Vaidyanathan
3
Advanced Materials Processing and Analysis Center (AMPAC), Mechanical, Materials, and Aerospace Engineering, University of Central Florida
, 4000 Central Florida Blvd, Orlando, FL 32816
Search for other works by this author on:
Published Online:
September 01 2012
Citation
Sen-Yong Chen, Othmane Benafan, Aravinda Kar, Raj Vaidyanathan; October 14–18, 2018. "Effects of polarization on laser diffusion and materials modification." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Orlando, FL, USA. (pp. pp. 975-982). ASME. https://doi.org/10.2351/1.5062572
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.