Longitudinally excited CO2 laser with short laser pulse for hard tissue drilling

Kazuyuki Uno; Hiroyuki Hayashi; Tetsuya Akitsu; Takahisa Jitsuno

doi:10.1117/12.2038325

18 February 2014 Longitudinally excited CO₂ laser with short laser pulse for hard tissue drilling

Kazuyuki Uno, Hiroyuki Hayashi, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 8929, Lasers in Dentistry XX; 89290L (2014) https://doi.org/10.1117/12.2038325
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

We developed a longitudinally excited CO₂ laser that produces a short laser pulse with a circular beam and a low divergence angle. The laser was very simple and consisted of a 45-cm-long alumina ceramic pipe with an inner diameter of 9 mm, a pulse power supply, a step-up transformer, a storage capacitance, and a spark-gap switch. The laser pulse had a spike pulse width of 103 ns and a pulse tail length of 32.6 μs. The beam cross-section was circular and the full-angle beam divergence was 1.7 mrad. The laser was used to drill ivory samples without carbonization at fluences of 2.3–7.1 J/cm². The drilling depth of the dry ivory increased with the fluence. The drilling mechanism of the dry ivory was attributed to absorption of the laser light by the ivory.

Citation Download Citation

Kazuyuki Uno, Hiroyuki Hayashi, Tetsuya Akitsu, and Takahisa Jitsuno "Longitudinally excited CO₂ laser with short laser pulse for hard tissue drilling", Proc. SPIE 8929, Lasers in Dentistry XX, 89290L (18 February 2014); https://doi.org/10.1117/12.2038325

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available