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Laser dynamics of a mode-locked thul...

Kadel, Rajesh.

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Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes./
Author:	Kadel, Rajesh.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2014,
Description:	180 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
Contained By:	Dissertation Abstracts International75-11B(E).
Subject:	Optics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3627743
ISBN:	9781321031768

Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes.
Kadel, Rajesh.

Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes. - Ann Arbor : ProQuest Dissertations & Theses, 2014 - 180 p.

Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.

Thesis (Ph.D.)--Kansas State University, 2014.

Mode-locked lasers that produce short optical pulses in the mid-infrared wavelength region have been sought out for a wide range of applications such as free space communication, molecular spectroscopy, medical diagnostics, and remote sensing. Here, a thulium and holmium (Tm/Ho) co-doped fiber laser that mode-locks in both the solitonic and stretched-pulse regimes is used to produce ultra-short pulses in the 2 mum region. Nonlinear polarization rotation technique is used where fiber nonlinearity is responsible to mode-lock the laser. The anomalous group velocity dispersion of both the single mode and gain fibers used limit the laser operation in the solitonic regime where spectral bandwidth is 10 nm and hence the pulse duration is limited to 996 fs. In order to increase the spectral bandwidth and hence get the shorter pulses the anomalous dispersion of these fibers has to compensate using normal group velocity dispersion fiber in the laser cavity.

ISBN: 9781321031768Subjects--Topical Terms:

517925
Optics.

Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes.
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020 $a 9781321031768
035 $a (MiAaPQ)AAI3627743
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100 1 $a Kadel, Rajesh. $3 3351444
245 1 0 $a Laser dynamics of a mode-locked thulium/holmium fiber laser in the solitonic and the stretched pulse regimes.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2014
300 $a 180 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
500 $a Adviser: Brian R. Washburn.
502 $a Thesis (Ph.D.)--Kansas State University, 2014.
520 $a Mode-locked lasers that produce short optical pulses in the mid-infrared wavelength region have been sought out for a wide range of applications such as free space communication, molecular spectroscopy, medical diagnostics, and remote sensing. Here, a thulium and holmium (Tm/Ho) co-doped fiber laser that mode-locks in both the solitonic and stretched-pulse regimes is used to produce ultra-short pulses in the 2 mum region. Nonlinear polarization rotation technique is used where fiber nonlinearity is responsible to mode-lock the laser. The anomalous group velocity dispersion of both the single mode and gain fibers used limit the laser operation in the solitonic regime where spectral bandwidth is 10 nm and hence the pulse duration is limited to 996 fs. In order to increase the spectral bandwidth and hence get the shorter pulses the anomalous dispersion of these fibers has to compensate using normal group velocity dispersion fiber in the laser cavity.
520 $a High numerical aperture fibers, which have normal group velocity dispersion around 2 mum due to its large and positive waveguide dispersion, can be used to compensate the anomalous dispersion of the gain and single mode fibers. We used a high numerical aperture fiber called UHNA4 in the laser cavity in order to compensate the anomalous dispersion of other fibers and mode-locked the laser in stretched pulse regime. The spectral bandwidth of the laser increased to 31 nm with corresponding pulse duration of 450 fs measured from the interferometric autocorrelation. The laser dynamics of the Tm/Ho co-doped fiber laser is also studied while going from the stretched-pulse to solitonic regime by fiber cut-back measurements of normal dispersion fiber. It was clearly observed that both the spectral bandwidth and the pulse duration changed significantly going from one region to the other.
590 $a School code: 0100.
650 4 $a Optics. $3 517925
650 4 $a Remote sensing. $3 535394
650 4 $a Biomedical engineering. $3 535387
650 4 $a High temperature physics. $3 3192580
690 $a 0752
690 $a 0799
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710 2 $a Kansas State University. $b Department of Physics. $3 2096759
773 0 $t Dissertation Abstracts International $g 75-11B(E).
790 $a 0100
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3627743