Delivery of Er:YAG laser radiation with repetition rate up to 150 Hz by a hollow glass waveguide

Michal Němec; Helena Jelínková; Jan Šulc; Katsumasa Iwai; Hiroyuki Takaku; Mitsunobu Miyagi

doi:10.1117/12.2647345

8 March 2023 Delivery of Er:YAG laser radiation with repetition rate up to 150 Hz by a hollow glass waveguide

Michal Němec, Helena Jelínková, Jan Šulc, Katsumasa Iwai, Hiroyuki Takaku, Mitsunobu Miyagi

Proceedings Volume 12399, Solid State Lasers XXXII: Technology and Devices; 123990O (2023) https://doi.org/10.1117/12.2647345
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

The use of lasers in many industrial or medical applications often requires the delivery of laser radiation from the laser system to the place of an exposure. One of the radiation transfer possibilities is the delivery of its by hollow glass waveguide. The fundamental advantage of this delivery media is the absence of the material through which the laser radiation is transferred. Other hollow waveguides properties are a possibility of delivery radiation in wide range of spectra, lossless delivery, non-toxicity, and low aging effect. This system is possible to use also for radiation which has strong absorption in water and therefore cannot be delivered through conventional glass fiber. Especially Er:YAG radiation which generated wavelength corresponding to maximum absorption in water and therefore it is extremely suitable for medical application. The aim of this study was to investigate radiation transmission for various parameters (repetition frequency, pulse length) of a commercially available diode-pumped Er:YAG laser. The special hollow glass waveguide with a cyclic olefin polymer coated silver layer has a length of 108 cm and an inner diameter of 700 µm. Radiation delivery as a function of laser input power and spatial distribution of output beams were investigated depending on pulse length from 100 µs to 400 µs and repetition frequency 20 Hz or 150 Hz. The transmission was achieved up to 86 % at a maximum amplitude of the output peak power of up to 406 W. The obtained results predetermine the use of this simple compact delivery laser system for further research with subsequent use in medicine.

Citation Download Citation

Michal Němec, Helena Jelínková, Jan Šulc, Katsumasa Iwai, Hiroyuki Takaku, and Mitsunobu Miyagi "Delivery of Er:YAG laser radiation with repetition rate up to 150 Hz by a hollow glass waveguide", Proc. SPIE 12399, Solid State Lasers XXXII: Technology and Devices, 123990O (8 March 2023); https://doi.org/10.1117/12.2647345

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Waveguides

Laser radiation

Glasses

Er:YAG lasers

Polymers

Silver

Pulse signals

Show All Keywords

Keywords/Phrases

Search In:

Publication Years