Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

Shaul Pearl; Yehoshua Shimony; Haim Lotem; Michael Roth; Nahum Angert

doi:10.1117/12.281337

Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

Shaul Pearl, Yehoshua Shimony, Haim Lotem, Michael Roth, Nahum Angert

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Intracavity second harmonic generation of a passively Q- switched cw Nd:YAG laser is studied. The saturable absorber used was a Cr⁴⁺:YAG crystal, and the second harmonic generator was a flux grown KTP crystal. The results were compared to a case of acousto-optic Q-switched case. To allow for a unidirectional second harmonic output beam, a folded laser cavity was constructed. However, due to a partially transmitting mirror in the cavity, two output counter propagating second harmonic beams, were generated. Unexpectedly, 180 degrees out of phase periodic power variations of the two output beams were observed, as a function of the distance from the nonlinear crystal to the mirror.

Original language	English
Pages (from-to)	232-237
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3110
DOIs	https://doi.org/10.1117/12.281337
State	Published - 1 Dec 1997
Externally published	Yes
Event	10th Meeting on Optical Engineering in Israel - Jerusalem, Israel Duration: 2 Mar 1997 → 2 Mar 1997

Keywords

Cr :YAG
Intracavity
KTP
Passive Q-switch
Saturable-absorber
Second harmonic generation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.281337

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title = "Intracavity second harmonic generation in passively Q-switched Nd:YAG laser",

abstract = "Intracavity second harmonic generation of a passively Q- switched cw Nd:YAG laser is studied. The saturable absorber used was a Cr4+:YAG crystal, and the second harmonic generator was a flux grown KTP crystal. The results were compared to a case of acousto-optic Q-switched case. To allow for a unidirectional second harmonic output beam, a folded laser cavity was constructed. However, due to a partially transmitting mirror in the cavity, two output counter propagating second harmonic beams, were generated. Unexpectedly, 180 degrees out of phase periodic power variations of the two output beams were observed, as a function of the distance from the nonlinear crystal to the mirror.",

keywords = "Cr :YAG, Intracavity, KTP, Passive Q-switch, Saturable-absorber, Second harmonic generation",

author = "Shaul Pearl and Yehoshua Shimony and Haim Lotem and Michael Roth and Nahum Angert",

year = "1997",

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doi = "10.1117/12.281337",

language = "English",

volume = "3110",

pages = "232--237",

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

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publisher = "SPIE",

note = "10th Meeting on Optical Engineering in Israel ; Conference date: 02-03-1997 Through 02-03-1997",

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TY - JOUR

T1 - Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

AU - Pearl, Shaul

AU - Shimony, Yehoshua

AU - Lotem, Haim

AU - Roth, Michael

AU - Angert, Nahum

PY - 1997/12/1

Y1 - 1997/12/1

N2 - Intracavity second harmonic generation of a passively Q- switched cw Nd:YAG laser is studied. The saturable absorber used was a Cr4+:YAG crystal, and the second harmonic generator was a flux grown KTP crystal. The results were compared to a case of acousto-optic Q-switched case. To allow for a unidirectional second harmonic output beam, a folded laser cavity was constructed. However, due to a partially transmitting mirror in the cavity, two output counter propagating second harmonic beams, were generated. Unexpectedly, 180 degrees out of phase periodic power variations of the two output beams were observed, as a function of the distance from the nonlinear crystal to the mirror.

AB - Intracavity second harmonic generation of a passively Q- switched cw Nd:YAG laser is studied. The saturable absorber used was a Cr4+:YAG crystal, and the second harmonic generator was a flux grown KTP crystal. The results were compared to a case of acousto-optic Q-switched case. To allow for a unidirectional second harmonic output beam, a folded laser cavity was constructed. However, due to a partially transmitting mirror in the cavity, two output counter propagating second harmonic beams, were generated. Unexpectedly, 180 degrees out of phase periodic power variations of the two output beams were observed, as a function of the distance from the nonlinear crystal to the mirror.

KW - Cr :YAG

KW - Intracavity

KW - KTP

KW - Passive Q-switch

KW - Saturable-absorber

KW - Second harmonic generation

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U2 - 10.1117/12.281337

DO - 10.1117/12.281337

M3 - Conference article

AN - SCOPUS:5844385623

SN - 0277-786X

VL - 3110

SP - 232

EP - 237

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

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

T2 - 10th Meeting on Optical Engineering in Israel

Y2 - 2 March 1997 through 2 March 1997

ER -

Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

Abstract

Keywords

ASJC Scopus subject areas

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