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Mode-locked Raman laser in hydrogen ...

Xiong, Yihan.

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Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser./
Author:	Xiong, Yihan.
Description:	174 p.
Notes:	Adviser: John L. Carlsten.
Contained By:	Dissertation Abstracts International68-07B.
Subject:	Physics, Optics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3273887
ISBN:	9780549135548

Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser.
Xiong, Yihan.

Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser. - 174 p.

Adviser: John L. Carlsten.

Thesis (Ph.D.)--Montana State University, 2007.

In this thesis, a theory is first presented for a far-off resonance mode-locked Raman laser in H2 with high finesse cavity enhancement. The theoretical derivation for the mode-locked Raman laser is based on semiclassical laser theory and time-dependent continuous wave (CW) Raman theory. Numerically calculated results, including the intra-cavity fields' amplitude and phase evolution and output Stokes power versus input pump power are discussed in three different regimes depending on the relationship between the coherence dephasing rate and the repetition rate of the mode-locked pump laser. Then experimentally, first an actively mode-locked external-cavity diode laser (ML-ECDL) was built along with a demonstration of how to frequency lock all the longitudinal modes from the ML-ECDL to a high finesse cavity. Then a tapered amplifier diode system was designed to increase the ML-ECDL power. Finally, a far-off resonance mode-locked Raman laser pumped by a ML-ECDL was demonstrated. With nine longitudinal pump modes, when operating at an average power level slightly above the CW threshold (3.89 mW), each of the pump modes, taken on its own, is below the CW lasing threshold. If these pump modes are not in-phase, the threshold will be nine times the CW threshold, roughly 35 mW. However the measured threshold for the ML Raman laser is about 5.4 mW, much less than 35 mW, because the pump modes are in-phase, and they can augment each other through four-wave-mixing processes causing all of them to lase as expected from the theory. The full width half maximum of the ML Stokes output is 310 ps. The beat signals from the ML Stokes showed that the Stokes pulses were made of at least eight modes.

ISBN: 9780549135548Subjects--Topical Terms:

1018756
Physics, Optics.

Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser.
LDR:02826nam 2200325 a 45 001 954987
005 20110622
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020 $a 9780549135548
035 $a (UMI)AAI3273887
035 $a AAI3273887
040 $a UMI $c UMI
100 1 $a Xiong, Yihan. $3 1278450
245 1 0 $a Mode-locked Raman laser in hydrogen pumped by a mode-locked external cavity diode laser.
300 $a 174 p.
500 $a Adviser: John L. Carlsten.
500 $a Source: Dissertation Abstracts International, Volume: 68-07, Section: B, page: 4568.
502 $a Thesis (Ph.D.)--Montana State University, 2007.
520 $a In this thesis, a theory is first presented for a far-off resonance mode-locked Raman laser in H2 with high finesse cavity enhancement. The theoretical derivation for the mode-locked Raman laser is based on semiclassical laser theory and time-dependent continuous wave (CW) Raman theory. Numerically calculated results, including the intra-cavity fields' amplitude and phase evolution and output Stokes power versus input pump power are discussed in three different regimes depending on the relationship between the coherence dephasing rate and the repetition rate of the mode-locked pump laser. Then experimentally, first an actively mode-locked external-cavity diode laser (ML-ECDL) was built along with a demonstration of how to frequency lock all the longitudinal modes from the ML-ECDL to a high finesse cavity. Then a tapered amplifier diode system was designed to increase the ML-ECDL power. Finally, a far-off resonance mode-locked Raman laser pumped by a ML-ECDL was demonstrated. With nine longitudinal pump modes, when operating at an average power level slightly above the CW threshold (3.89 mW), each of the pump modes, taken on its own, is below the CW lasing threshold. If these pump modes are not in-phase, the threshold will be nine times the CW threshold, roughly 35 mW. However the measured threshold for the ML Raman laser is about 5.4 mW, much less than 35 mW, because the pump modes are in-phase, and they can augment each other through four-wave-mixing processes causing all of them to lase as expected from the theory. The full width half maximum of the ML Stokes output is 310 ps. The beat signals from the ML Stokes showed that the Stokes pulses were made of at least eight modes.
590 $a School code: 0137.
650 4 $a Physics, Optics. $3 1018756
690 $a 0752
710 2 $a Montana State University. $b Physics. $3 1278451
773 0 $t Dissertation Abstracts International $g 68-07B.
790 $a 0137
790 1 0 $a Babbitt, William R. $e committee member
790 1 0 $a Carlsten, John L., $e advisor
790 1 0 $a Cone, Rufus L. $e committee member
790 1 0 $a Rebane, Aleks $e committee member
790 1 0 $a Shaw, Joe $e committee member
790 1 0 $a Young, David M. $e committee member
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3273887