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IssueLaser & Photonics Reviews: Volume 12, Issue 2
February 2018
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Front Cover
Broadband Nonlinear Photonics in Few-Layer MXene Ti3C2Tx (T = F, O, or OH) (Laser Photonics Rev. 12(2)/2018)
- First Published: 16 February 2018
Broadband Nonlinear Photonics
MXene has attracted considerable attention as a recently developed 2D material due to its graphene-like but highly tunable and tailorable electronic/optical properties. In article number 1700229, Qiao Wen, Han Zhang, and co-workers investigate broadband nonlinear optical responses in few-layer MXene Ti3C2Tx with values comparable to graphene. Furthermore, the authors demonstrate a compact femtosecond fiber laser in the telecommunication window using Ti3C2Tx as a fast saturable absorber.
Inside Front Cover
Spatio-Temporal Characterization of Pump-Induced Wavefront Aberrations in Yb3 + -Doped Materials (Laser Photonics Rev. 12(2)/2018)
- First Published: 16 February 2018
High Power Lasers
In article number 1700211, Issa Tamer and co-workers utilize Yb:CaF2 crystal and Yb:FP-glass within the high power ultrashort POLARIS laser system to amplify near-infrared laser pulses up to energies in the Joule regime. A comprehensive spatio-temporal characterization of pump-induced aberrations across the free aperture of the considered diode-pumped active materials is presented. All relevant material constants are determined, allowing for accurate modeling of the aberrations. For the further development of next-generation high power laser systems, extensive knowledge of the spatio-temporal behavior of these aberrations is required.
Back Cover
Vertical-Cavity Silicon-Integrated Laser with In-Plane Waveguide Emission at 850 nm (Laser Photonics Rev. 12(2)/2018)
- First Published: 16 February 2018
Silicon-Integrated Lasers
In article number 1700206, Sulakshna Kumari and co-workers experimentally demonstrate a hybrid vertical-cavity silicon-integrated laser (VCSIL) with in-plane emission into a silicon nitride (SiN) waveguide. The inset shows the optical micrograph of the fully processed VCSIL. A weak SiN grating is placed inside the cavity to couple the vertically amplified light inside the cavity into an in-plane SiN waveguide. The grating also sets the polarization of the lasing output and provides transverse mode control.
Masthead
Original Papers
Broadband Nonlinear Photonics
Broadband Nonlinear Photonics in Few-Layer MXene Ti3C2Tx (T = F, O, or OH)
- First Published: 02 November 2017
Broadband nonlinear optical responses in few-layer MXene Ti3C2Tx with values comparable to graphene were systematically investigated. Considering the chemical composition richness of MXene, highly tailorable and efficient optical manipulating is suggested for diverse photonics applications. Compact femtosecond fiber laser in the telecommunication window is demonstrated using Ti3C2Tx as a fast saturable absorber.
High Power Lasers
Spatio-Temporal Characterization of Pump-Induced Wavefront Aberrations in Yb3 + -Doped Materials
- First Published: 23 November 2017
A comprehensive spatio-temporal characterization is presented describing the complete pump-induced wavefront aberrations, with both thermal and electronic contributions, in Yb3+-doped YAG, CaF2, and fluorophosphate glass, across the free aperture of the considered diode-pumped active materials. All relevant material constants could be determined during this investigation, allowing the accurate modeling of the pump-induced wavefront aberrations and subsequent optimization for laser systems worldwide employing these Yb3+-doped materials.
Silicon-Integrated Lasers
Vertical-Cavity Silicon-Integrated Laser with In-Plane Waveguide Emission at 850 nm
- First Published: 15 January 2018
In this work, a hybrid vertical-cavity silicon-integrated laser (VCSIL) with in-plane emission into a silicon nitride (SiN) waveguide is experimentally demonstrated. A weak SiN grating placed inside the cavity enables coupling from the vertical cavity into the in-plane SiN waveguide, sets the polarization of the lasing output, and provides transverse mode control.
Frontispiece
Observation of Type I Photonic Weyl Points in Optical Frequencies (Laser Photonics Rev. 12(2)/2018)
- First Published: 16 February 2018
In article number 1700271, Min Gu and co-workers fabricate optical type I Weyl points and demonstrate their chiral nature by coupling with spin-angular momentum carried by circularly polarized light. This Weyl-point induced mechanism leads to reversed circular dichroism along the directions that intersect the oppositely charged topological photonic states.
Original Papers
Topological Photonics
Observation of Type I Photonic Weyl Points in Optical Frequencies
- First Published: 20 December 2017
Middle-infrared type-I Weyl points are detected in bio-inspired topological micro-structures coated uniquely with layered-composite nanometric high-index materials. More importantly, the chiral character of the photonic Weyl points are experimentally demonstrated through their coupling with spin-angular momentum carried by circularly polarised light. This Weyl-point induced mechanism leads to reversed circular dichroism along the directions that intersect the oppositely charged topological photonic states.
Hyperbolic Metamaterials
Second-Harmonic Generation from Hyperbolic Plasmonic Nanorod Metamaterial Slab
- First Published: 15 January 2018
Broadband enhancement and unconventional polarisation properties of second-harmonic generation are demonstrated in a plasmonic hyperbolic metamaterial slab due to its rich modal structure. The results open up possibilities to design tuneable frequency-doubling integratable metamaterial with the goal to overcome limitations associated with classical phase matching conditions in thick nonlinear crystals.
