Study of saturable absorber materials for Q-switching dye laser

Study of saturable absorber materials for Q-switching dye laser

Q-switching is a technology widely used in lasers to generate short pulses with high peak powers. In practice, Q-switching can be realized with various methods including mechanically by rotating mirror, actively either by acousto-optic or electrooptic method, or passively using a saturable absorber....

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Main Author: Munajat, Nur Farizan
Format: Thesis
Language:English
Published: 2005
Subjects:
QC Physics
Online Access:http://eprints.utm.my/id/eprint/4186/1/NurFarizanMunajatMFS2005.pdf
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spelling my-utm-ep.41862018-01-15T08:28:48Z Study of saturable absorber materials for Q-switching dye laser 2005-08 Munajat, Nur Farizan QC Physics Q-switching is a technology widely used in lasers to generate short pulses with high peak powers. In practice, Q-switching can be realized with various methods including mechanically by rotating mirror, actively either by acousto-optic or electrooptic method, or passively using a saturable absorber. The first two techniques have their own problems especially the spinning machine and the driver to get a shorter pulse duration. Therefore, passive Q-switch was chosen in this study because it requires less optical element inside the laser cavity and no outside driving circuitry and makes this technique simple and relatively cheaper compared to the other two techniques. Passive Q-switching is a better choice for those applications where compactness of the laser is a prime requirement. The objective of this project is to study and characterize the suitable material to be saturable absorber for passive Q-switching laser. The dye laser was utilized as a source of Q-switching laser. As a preliminary, the laser was calibrated to determine the best performance of laser beam. Various materials including 3, 3’- Diethyloxadicarbocyanine Iodide (DODCI), 1,3'-Diethyl-4, 2’-quinolyloxacarbocyanine Iodide (DQOCI) and 1,1'-Diethyl-4, 4’-carbocyanine Iodide (Cryptocyannine) and Chromium-doped Yttrium Aluminium Garnet (Cr4+: YAG) crystal are employed as a saturable absorber material. The pulse width, the single pulse energy and the peak power of the Q-switched laser output are measured. Two of the tested materials namely 1,3'- Diethyl-4, 2’-quinolyloxacarbocyanine Iodide (DQOCI) and Chromium-doped Yttrium Aluminium Garnet (Cr4+: YAG) crystal demonstrate a good performance to be a saturable absorber. The output characteristics of the passive Q-switch laser possess a uniphase of TEM00 mode. 2005-08 Thesis http://eprints.utm.my/id/eprint/4186/ http://eprints.utm.my/id/eprint/4186/1/NurFarizanMunajatMFS2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic QC Physics
spellingShingle QC Physics
Munajat, Nur Farizan
Study of saturable absorber materials for Q-switching dye laser
description Q-switching is a technology widely used in lasers to generate short pulses with high peak powers. In practice, Q-switching can be realized with various methods including mechanically by rotating mirror, actively either by acousto-optic or electrooptic method, or passively using a saturable absorber. The first two techniques have their own problems especially the spinning machine and the driver to get a shorter pulse duration. Therefore, passive Q-switch was chosen in this study because it requires less optical element inside the laser cavity and no outside driving circuitry and makes this technique simple and relatively cheaper compared to the other two techniques. Passive Q-switching is a better choice for those applications where compactness of the laser is a prime requirement. The objective of this project is to study and characterize the suitable material to be saturable absorber for passive Q-switching laser. The dye laser was utilized as a source of Q-switching laser. As a preliminary, the laser was calibrated to determine the best performance of laser beam. Various materials including 3, 3’- Diethyloxadicarbocyanine Iodide (DODCI), 1,3'-Diethyl-4, 2’-quinolyloxacarbocyanine Iodide (DQOCI) and 1,1'-Diethyl-4, 4’-carbocyanine Iodide (Cryptocyannine) and Chromium-doped Yttrium Aluminium Garnet (Cr4+: YAG) crystal are employed as a saturable absorber material. The pulse width, the single pulse energy and the peak power of the Q-switched laser output are measured. Two of the tested materials namely 1,3'- Diethyl-4, 2’-quinolyloxacarbocyanine Iodide (DQOCI) and Chromium-doped Yttrium Aluminium Garnet (Cr4+: YAG) crystal demonstrate a good performance to be a saturable absorber. The output characteristics of the passive Q-switch laser possess a uniphase of TEM00 mode.
format Thesis
qualification_level Master's degree
author Munajat, Nur Farizan
author_facet Munajat, Nur Farizan
author_sort Munajat, Nur Farizan
title Study of saturable absorber materials for Q-switching dye laser
title_short Study of saturable absorber materials for Q-switching dye laser
title_full Study of saturable absorber materials for Q-switching dye laser
title_fullStr Study of saturable absorber materials for Q-switching dye laser
title_full_unstemmed Study of saturable absorber materials for Q-switching dye laser
title_sort study of saturable absorber materials for q-switching dye laser
granting_institution Universiti Teknologi Malaysia, Faculty of Science
granting_department Faculty of Science
publishDate 2005
url http://eprints.utm.my/id/eprint/4186/1/NurFarizanMunajatMFS2005.pdf
_version_ 1747814499821289472

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