Advances in Nonlinear Optical Materials and Devices

Byer, Robert L.

doi:10.1016/b978-0-444-89304-8.50045-6

Cited by 3 publications

(3 citation statements)

References 52 publications

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“…The conversion efficiency of the resonated fundamental to the second harmonic is given by: For most monolithic crystals with proper effective non-linear conversion factor for MgO: LiNbO 3 crystal, then (Byer, 1975, Guo and Wang, 2017, Chaitanya et al, 2016:…”

Section: Methodsmentioning

confidence: 99%

Optimization of Variable Parameters in Diode Pumped SHG Nd-YAG Lasers

2023

ZJPAS

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Second Harmonic Generation (SHG) is the process of doubling the natural frequency of any laser. Since the output of Nd-YAG lasers has a wavelength of , it is the aim of this research to produce an SHM diode pumped of this laser with a wavelength of . This work is done via manipulating a few equations to produce the best results for both circulating and keeping other input parameters constant such as reflectivity, and amplification factor, on other cavity engineering parameters. The results are compared with other experimental values, and they are in fair agreement within the chosen incident powers, ranging from one to sixteen milliwatts. Also, a tendency is performed to perform a modification for the reflectivity of the crystal end reflectivity, which is the theory-built proposal. But the fact is that for the [MgO: LiNbO3] crystal only (0.992) the reflectivity enhances the other parameters such as the round-trip transmission, the second harmonic time duration, and the second harmonic efficiency of the crystal.

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Section: Methodsmentioning

confidence: 99%

Optimization of Variable Parameters in Diode Pumped SHG Nd-YAG Lasers

2023

ZJPAS

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“…In DROs the signal and idler waves resonate in the OPO, and the simultaneous cavity field enhancement for the signal and idler can lead to low oscillation thresholds. The threshold of a DRO can be lower than an SRO with the same gain by a factor of half the round-trip power loss [61]. This feature of DROs reduces the gain requirement and consequently compact, low-power, and quiet pump sources can be used.…”

Section: Doubly-resonant Femtosecond Opo Frequency Combsmentioning

confidence: 99%

Femtosecond optical parametric oscillator frequency combs

Kobayashi

Torizuka

Marandi

et al. 2015

J. Opt.

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Techniques to measure and manipulate the carrier-envelope phase within femtosecond optical parametric oscillators (OPOs) allow their outputs to be stabilized in a way that produces a frequency comb structure, potentially tunable throughout the transparency band of the gain material. In this review we describe the fundamental principles of phase control, on which the development of singly-and doubly-resonant OPO frequency combs is based. We give examples of practical embodiments of such combs, and discuss in detail several applications, including spectroscopy, metrology, quantum computation and astrophotonics.

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“…A detailed theoretical treatment of quasiphase-matched interactions was provided by Fejer et al, [6] and a review of early progress in QPM-interactions was presented by Byer. [7] Along with process (1), the other, multistep quadratic interactions such as the quadratic cascading, [8] that is, the sequence of two second-order nonlinear processes, can coexist in a nonlinear media. The simplest case of cascading is described by an up-conversion process with ω 3 = ω 1 + ω 2 followed by down-conversion with ω 1 = ω 3 − ω 2 or ω 2 = ω 3 − ω 1 .…”

Section: Introductionmentioning

confidence: 99%

Broadband noncollinear optical parametric amplification under low‐frequency picosecond pump in homogeneous KTP crystal

Vereshchagin

Morozov

Tunkin

2018

J Raman Spectroscopy

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The nature of cubic and cascaded quadratic nonlinear responses in the KTiOPO4 crystal under picosecond pump is studied. The main attention is paid to determination of the origin and properties of the blue radiation accompanying the red light amplification process (the central wavelength ~685 nm, bandwidth ~20 nm) in a noncollinear optical parametric amplifier (NOPA) pumped by the second‐harmonic radiation of the picosecond Nd:YAG laser (532 nm). In NOPA, the amplified seed radiation (ωs) becomes so intense that it can participate in any nonlinear three‐wave interaction and also can play the role of the Stokes wave in the in the coherent anti‐Stokes Raman scattering‐process in which powerful pump radiation (ωp) of the main parametric process serves both as the pump wave and the probe wave. Possible causes of the blue light emanating from the KTP crystal and the mechanisms for their realization are analyzed. We interpret the ring of blue light around the axis located between the directions of propagation of the green pump beam and the red beam of the amplified seed radiation, as the emission of amplified parametric fluorescence (signal wave) under low‐frequency pump. This phenomenon can be used for effective amplification in picosecond NOPA of weak anti‐Stokes radiation in the experiments with time‐resolved broadband picosecond coherent Anti‐Stokes Raman Scattering.

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Advances in Nonlinear Optical Materials and Devices

Cited by 3 publications

References 52 publications

Optimization of Variable Parameters in Diode Pumped SHG Nd-YAG Lasers

Optimization of Variable Parameters in Diode Pumped SHG Nd-YAG Lasers

Femtosecond optical parametric oscillator frequency combs

Broadband noncollinear optical parametric amplification under low‐frequency picosecond pump in homogeneous KTP crystal

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