Mode-Locking with Ultra-Low Intra-Cavity Pulse Intensity Using Enhanced Kerr Nonlinearity

Mallachi Elia Meller; Shai Yefet; Avi Pe'er

doi:10.1109/jqe.2017.2670544

Mode-Locking with Ultra-Low Intra-Cavity Pulse Intensity Using Enhanced Kerr Nonlinearity

Mallachi Elia Meller, Shai Yefet, Avi Pe'er

Department of Physics - at Bar-Ilan University

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

Kerr lens mode locking strongly depends upon intensity. Low pulse intensity weakens the nonlinear Kerr lens, and eventually mode locking is not supported. We demonstrate efficient mode-locking in a Ti:Sapphire laser oscillator with record-low intra-cavity pulse intensity (18 GW/cm²) and intra-cavity average power (340 mW). Using an additional nonlinear window in the cavity, the Kerr nonlinearity can be enhanced by an order of magnitude compared to the standard Ti:Sapphire cavity, allowing mode locking with an output coupler reflectivity as low as R = 55% and record-low intra-cavity pulse intensity. Our results provide an important new possibility to control mode-locking in cavities with very low intra-cavity pulse intensity, such as semiconductor laser oscillators and high-repetition rate mode-locked lasers.

Original language	English
Article number	7857685
Journal	IEEE Journal of Quantum Electronics
Volume	53
Issue number	2
DOIs	https://doi.org/10.1109/jqe.2017.2670544
State	Published - Apr 2017

Keywords

Titanium-sapphire lasers
laser mode locking
ultrafast nonlinear optics

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/jqe.2017.2670544

Cite this

@article{8883a5c1000441d88ae2fc79d2463ad5,

title = "Mode-Locking with Ultra-Low Intra-Cavity Pulse Intensity Using Enhanced Kerr Nonlinearity",

abstract = "Kerr lens mode locking strongly depends upon intensity. Low pulse intensity weakens the nonlinear Kerr lens, and eventually mode locking is not supported. We demonstrate efficient mode-locking in a Ti:Sapphire laser oscillator with record-low intra-cavity pulse intensity (18 GW/cm2) and intra-cavity average power (340 mW). Using an additional nonlinear window in the cavity, the Kerr nonlinearity can be enhanced by an order of magnitude compared to the standard Ti:Sapphire cavity, allowing mode locking with an output coupler reflectivity as low as R = 55\% and record-low intra-cavity pulse intensity. Our results provide an important new possibility to control mode-locking in cavities with very low intra-cavity pulse intensity, such as semiconductor laser oscillators and high-repetition rate mode-locked lasers.",

keywords = "Titanium-sapphire lasers, laser mode locking, ultrafast nonlinear optics",

author = "Meller, \{Mallachi Elia\} and Shai Yefet and Avi Pe'er",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.",

year = "2017",

month = apr,

doi = "10.1109/jqe.2017.2670544",

language = "الإنجليزيّة",

volume = "53",

journal = "IEEE Journal of Quantum Electronics",

issn = "0018-9197",

number = "2",

}

TY - JOUR

T1 - Mode-Locking with Ultra-Low Intra-Cavity Pulse Intensity Using Enhanced Kerr Nonlinearity

AU - Meller, Mallachi Elia

AU - Yefet, Shai

AU - Pe'er, Avi

PY - 2017/4

Y1 - 2017/4

N2 - Kerr lens mode locking strongly depends upon intensity. Low pulse intensity weakens the nonlinear Kerr lens, and eventually mode locking is not supported. We demonstrate efficient mode-locking in a Ti:Sapphire laser oscillator with record-low intra-cavity pulse intensity (18 GW/cm2) and intra-cavity average power (340 mW). Using an additional nonlinear window in the cavity, the Kerr nonlinearity can be enhanced by an order of magnitude compared to the standard Ti:Sapphire cavity, allowing mode locking with an output coupler reflectivity as low as R = 55% and record-low intra-cavity pulse intensity. Our results provide an important new possibility to control mode-locking in cavities with very low intra-cavity pulse intensity, such as semiconductor laser oscillators and high-repetition rate mode-locked lasers.

AB - Kerr lens mode locking strongly depends upon intensity. Low pulse intensity weakens the nonlinear Kerr lens, and eventually mode locking is not supported. We demonstrate efficient mode-locking in a Ti:Sapphire laser oscillator with record-low intra-cavity pulse intensity (18 GW/cm2) and intra-cavity average power (340 mW). Using an additional nonlinear window in the cavity, the Kerr nonlinearity can be enhanced by an order of magnitude compared to the standard Ti:Sapphire cavity, allowing mode locking with an output coupler reflectivity as low as R = 55% and record-low intra-cavity pulse intensity. Our results provide an important new possibility to control mode-locking in cavities with very low intra-cavity pulse intensity, such as semiconductor laser oscillators and high-repetition rate mode-locked lasers.

KW - Titanium-sapphire lasers

KW - laser mode locking

KW - ultrafast nonlinear optics

UR - http://www.scopus.com/inward/record.url?scp=85017515741&partnerID=8YFLogxK

U2 - 10.1109/jqe.2017.2670544

DO - 10.1109/jqe.2017.2670544

M3 - مقالة

SN - 0018-9197

VL - 53

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

IS - 2

M1 - 7857685

ER -

Mode-Locking with Ultra-Low Intra-Cavity Pulse Intensity Using Enhanced Kerr Nonlinearity

Abstract

Keywords

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this