24–26 May 2017
Rayong Marriott Resort & Spa
Asia/Bangkok timezone

The Measurement of Thermal Diffusivity in Conductor and Insulator by Photodeflection Technique

24 May 2017, 15:10
50m
Rayong Marriott Resort & Spa

Rayong Marriott Resort & Spa

http://www.marriott.com/hotels/travel/bkkrr-rayong-marriott-resort-and-spa/ Rayong, Thailand
Poster Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena Poster Presentation I

Speaker

Uthed Achathongsuk

Description

The purpose of this study is to compare and estimate thermal diffusivities of conductor and insulator material by using photothermal deflection which varies frequency. The experimental setup consists of 2 laser lines: 1) a pump laser beams through a modulator, varied frequency, controlled by lock-in amplifier then focused beam at sample surface by lens. 2) a probe laser which is perpendicular with the pump laser beam skims the sample surface. The probe laser deflection signal is obtained by a position sensor controlled by lock-in amplifier. Thermal diffusivity is calculated by measuring the amplitude and phase of the Photodeflection signal and compared with the thermal diffusivity of standard value. The results of thermal diffusivities, calculated by amplitude and phase, are slightly different from the standard value.

Primary author

Co-authors

Presentation materials

There are no materials yet.

Peer reviewing

Paper