Generation of powerful 3 microns radiation and its delivery

Miroslav Čech; Michal Němec; Petr Koranda; Helena Jelínková; Mitsunobu Miyagi; Katsumasa Iwai; Yi Wei Shi; Yuji Matsuura

doi:10.1117/12.663624

Generation of powerful 3 microns radiation and its delivery

Miroslav Čech, Michal Němec, Petr Koranda, Helena Jelínková, Mitsunobu Miyagi, Katsumasa Iwai, Yi Wei Shi, Yuji Matsuura

MEN - Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

In some last years mid-infrared EnYAG laser radiation (2940 nm) found the exploitation in many applications in technology and especially in various medical branches (dentistry, dermatology, cardiology, ophthalmology). Most of them use the EnYAG laser system working in free-running regime generating the pulses with the length of some hundreds of microseconds. In the presented work we concentrated on the development and optimization of electro-optically Q-switched EnYAG laser and suitable delivery system. Er:YAG laser operated both in free-running or Q-switched regime was developed and optimized. LiNbO ₃ Pockels cell was utilized for Q-switching the Er:YAG laser. Single giant pulses with maximal energy 67 mJ and minimal duration 53 ns FWHM were generated for maximal pump energy 131 J and for the optimal Pockels cell parameters (high voltage value 1.4 kV, delay of Pockels cell switching after the flashlamp trigger 450 μs). The Er:YAG laser radiation was effectively delivered by the special COP/Ag hollow glass waveguides with inner/outer diameters 700/850 μm or 320/450 μm, and length from 10 cm up to 1 m. The transmission of the used waveguides was measured to be from 73% to 84% according to waveguide type. With the help of delivery systems, the EnYAG laser radiation (in the form of long pulses for free-running regime or short pulses for Q-switched regime) was applied to various biological tissue samples to study the basic laser radiation - tissue interactions and treatment possibilities.

Original language	English
Title of host publication	Solid State Lasers and Amplifiers II
DOIs	https://doi.org/10.1117/12.663624
Publication status	Published - 2006
Event	Solid State Lasers and Amplifiers II - Strasbourg, France Duration: 2006 Apr 5 → 2006 Apr 6

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6190
ISSN (Print)	0277-786X

Conference

Conference	Solid State Lasers and Amplifiers II
Country/Territory	France
City	Strasbourg
Period	06/4/5 → 06/4/6

Keywords

COP/Ag hollow glass waveguide
EnYAG
LiNbO Pockels cell
Q-switching
Solid state lasers

Access to Document

10.1117/12.663624

Cite this

@inproceedings{2bea8021b730406490275c32bd31507b,

title = "Generation of powerful 3 microns radiation and its delivery",

abstract = "In some last years mid-infrared EnYAG laser radiation (2940 nm) found the exploitation in many applications in technology and especially in various medical branches (dentistry, dermatology, cardiology, ophthalmology). Most of them use the EnYAG laser system working in free-running regime generating the pulses with the length of some hundreds of microseconds. In the presented work we concentrated on the development and optimization of electro-optically Q-switched EnYAG laser and suitable delivery system. Er:YAG laser operated both in free-running or Q-switched regime was developed and optimized. LiNbO 3 Pockels cell was utilized for Q-switching the Er:YAG laser. Single giant pulses with maximal energy 67 mJ and minimal duration 53 ns FWHM were generated for maximal pump energy 131 J and for the optimal Pockels cell parameters (high voltage value 1.4 kV, delay of Pockels cell switching after the flashlamp trigger 450 μs). The Er:YAG laser radiation was effectively delivered by the special COP/Ag hollow glass waveguides with inner/outer diameters 700/850 μm or 320/450 μm, and length from 10 cm up to 1 m. The transmission of the used waveguides was measured to be from 73% to 84% according to waveguide type. With the help of delivery systems, the EnYAG laser radiation (in the form of long pulses for free-running regime or short pulses for Q-switched regime) was applied to various biological tissue samples to study the basic laser radiation - tissue interactions and treatment possibilities.",

keywords = "COP/Ag hollow glass waveguide, EnYAG, LiNbO Pockels cell, Q-switching, Solid state lasers",

author = "Miroslav {\v C}ech and Michal N{\v e}mec and Petr Koranda and Helena Jel{\'i}nkov{\'a} and Mitsunobu Miyagi and Katsumasa Iwai and Shi, {Yi Wei} and Yuji Matsuura",

year = "2006",

doi = "10.1117/12.663624",

language = "English",

isbn = "0819462462",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Solid State Lasers and Amplifiers II",

note = "Solid State Lasers and Amplifiers II ; Conference date: 05-04-2006 Through 06-04-2006",

}

Čech, M, Němec, M, Koranda, P, Jelínková, H, Miyagi, M, Iwai, K, Shi, YW & Matsuura, Y 2006, Generation of powerful 3 microns radiation and its delivery. in Solid State Lasers and Amplifiers II., 619016, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6190, Solid State Lasers and Amplifiers II, Strasbourg, France, 06/4/5. https://doi.org/10.1117/12.663624

TY - GEN

T1 - Generation of powerful 3 microns radiation and its delivery

AU - Čech, Miroslav

AU - Němec, Michal

AU - Koranda, Petr

AU - Jelínková, Helena

AU - Miyagi, Mitsunobu

AU - Iwai, Katsumasa

AU - Shi, Yi Wei

AU - Matsuura, Yuji

PY - 2006

Y1 - 2006

N2 - In some last years mid-infrared EnYAG laser radiation (2940 nm) found the exploitation in many applications in technology and especially in various medical branches (dentistry, dermatology, cardiology, ophthalmology). Most of them use the EnYAG laser system working in free-running regime generating the pulses with the length of some hundreds of microseconds. In the presented work we concentrated on the development and optimization of electro-optically Q-switched EnYAG laser and suitable delivery system. Er:YAG laser operated both in free-running or Q-switched regime was developed and optimized. LiNbO 3 Pockels cell was utilized for Q-switching the Er:YAG laser. Single giant pulses with maximal energy 67 mJ and minimal duration 53 ns FWHM were generated for maximal pump energy 131 J and for the optimal Pockels cell parameters (high voltage value 1.4 kV, delay of Pockels cell switching after the flashlamp trigger 450 μs). The Er:YAG laser radiation was effectively delivered by the special COP/Ag hollow glass waveguides with inner/outer diameters 700/850 μm or 320/450 μm, and length from 10 cm up to 1 m. The transmission of the used waveguides was measured to be from 73% to 84% according to waveguide type. With the help of delivery systems, the EnYAG laser radiation (in the form of long pulses for free-running regime or short pulses for Q-switched regime) was applied to various biological tissue samples to study the basic laser radiation - tissue interactions and treatment possibilities.

AB - In some last years mid-infrared EnYAG laser radiation (2940 nm) found the exploitation in many applications in technology and especially in various medical branches (dentistry, dermatology, cardiology, ophthalmology). Most of them use the EnYAG laser system working in free-running regime generating the pulses with the length of some hundreds of microseconds. In the presented work we concentrated on the development and optimization of electro-optically Q-switched EnYAG laser and suitable delivery system. Er:YAG laser operated both in free-running or Q-switched regime was developed and optimized. LiNbO 3 Pockels cell was utilized for Q-switching the Er:YAG laser. Single giant pulses with maximal energy 67 mJ and minimal duration 53 ns FWHM were generated for maximal pump energy 131 J and for the optimal Pockels cell parameters (high voltage value 1.4 kV, delay of Pockels cell switching after the flashlamp trigger 450 μs). The Er:YAG laser radiation was effectively delivered by the special COP/Ag hollow glass waveguides with inner/outer diameters 700/850 μm or 320/450 μm, and length from 10 cm up to 1 m. The transmission of the used waveguides was measured to be from 73% to 84% according to waveguide type. With the help of delivery systems, the EnYAG laser radiation (in the form of long pulses for free-running regime or short pulses for Q-switched regime) was applied to various biological tissue samples to study the basic laser radiation - tissue interactions and treatment possibilities.

KW - COP/Ag hollow glass waveguide

KW - EnYAG

KW - LiNbO Pockels cell

KW - Q-switching

KW - Solid state lasers

UR - http://www.scopus.com/inward/record.url?scp=33749561144&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749561144&partnerID=8YFLogxK

U2 - 10.1117/12.663624

DO - 10.1117/12.663624

M3 - Conference contribution

AN - SCOPUS:33749561144

SN - 0819462462

SN - 9780819462466

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Solid State Lasers and Amplifiers II

T2 - Solid State Lasers and Amplifiers II

Y2 - 5 April 2006 through 6 April 2006

ER -

Generation of powerful 3 microns radiation and its delivery

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this