- Impact of spectral phase mismatch on femtosecond coherent beam combining systems
[作者：Daniault, L; Hanna, M; Lombard, L; Zaouter, Y; Mottay, E; Goular, D; Bourdon, P; Druon, F; Georges, P,期刊：OPTICS LETTERS, 页码：650-652 , 文章类型： Article，,卷期：2012年37-4]
- We experimentally investigate the impact of spectral phase mismatch on the coherent beam combining of two femtosecond fiber chirped-pulse amplifiers. By measuring the differential spectral phase, both linear and nonlinea...
- Infrared camera based on a curved retina
[作者：Dumas, D; Fendler, M; Berger, F; Cloix, B; Pornin, C; Baier, N; Druart, G; Primot, J; le Coarer, E,期刊：OPTICS LETTERS, 页码：653-655 , 文章类型： Article，,卷期：2012年37-4]
- Design of miniature and light cameras requires an optical design breakthrough to achieve good optical performance. Solutions inspired by animals' eyes are the most promising. The curvature of the retina offers several ad...
- Double-illumination photoacoustic microscopy
[作者：Yao, JJ; Maslov, KI; Puckett, ER; Rowland, KJ; Warner, BW; Wang, LHV,期刊：OPTICS LETTERS, 页码：659-661 , 文章类型： Article，,卷期：2012年37-4]
- Recent developments of optical-resolution photoacoustic microscopy (OR-PAM) have improved its spatial resolution and imaging speed. However, the penetration depth of OR-PAM is still limited to similar to 1 mm in tissue, ...
- On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures
[作者：Kocaman, S; Aras, MS; Panoiu, NC; Lu, M; Wong, CW,期刊：OPTICS LETTERS, 页码：665-667 , 文章类型： Article，,卷期：2012年37-4]
- We demonstrate chip-scale flat-top filters at near-IR wavelengths using negative index photonic crystal based MachZehnder interferometers. Supported by full three-dimensional numerical simulations, we experimentally demo...
- Modulational instability in a silicon-on-insulator directional coupler: role of the coupling-induced group velocity dispersion
[作者：Ding, W; Staines, OK; Hobbs, GD; Gorbach, AV; de Nobriga, C; Wadsworth, WJ; Knight, JC; Skryabin, DV; Strain, MJ; Sorel, M; De La Rue, RM,期刊：OPTICS LETTERS, 页码：668-670 , 文章类型： Article，,卷期：2012年37-4]
- We report frequency conversion experiments in silicon-on-insulator (SOI) directional couplers. We demonstrate that the evanescent coupling between two subwavelength SOI waveguides is strongly dispersive and significantly...
- Spectroscopic measurement of the refractive index of ion-implanted diamond
[作者：Battiato, A; Bosia, F; Ferrari, S; Olivero, P; Sytchkova, A; Vittone, E,期刊：OPTICS LETTERS, 页码：671-673 , 文章类型： Article，,卷期：2012年37-4]
- We present the results of variable-angle spectroscopic ellipsometry and transmittance measurements to determine the variation of the complex refractive index of ion-implanted single-crystal diamond. An increase is found ...
- Complete optical on-chip isolation based on asymmetric stimulated Raman gain/loss
[作者：Luo, Z; Ye, WM; Yuan, XD; Zhu, ZH; Zeng, C; Ji, JR,期刊：OPTICS LETTERS, 页码：674-676 , 文章类型： Article，,卷期：2012年37-4]
- In this Letter, we suggest an on-chip integrated isolator based on an add-drop filter with unidirectional Raman-induced gain (or loss). For the steady state, complete one-way propagation for monochromatic signals is real...
- Effects of the amorphous layer on laser-induced subwavelength structures on carbon allotropes
[作者：Huang, M; Zhao, FL; Cheng, Y; Xu, ZZ,期刊：OPTICS LETTERS, 页码：677-679 , 文章类型： Article，,卷期：2012年37-4]
- By micro-Raman spectroscopy, we show that the structured surfaces of highly oriented pyrolytic graphite and diamond induced by 800 nm, 125 fs or 532 nm, 30 ps laser pulses are capped by thin amorphous carbon layers. Base...
- Examining metal nanoparticle surface chemistry using hollow-core, photonic-crystal, fiber-assisted SERS
[作者：Eftekhari, F; Lee, A; Kumacheva, E; Helmy, AS,期刊：OPTICS LETTERS, 页码：680-682 , 文章类型： Article，,卷期：2012年37-4]
- In this Letter, we demonstrate the efficacy of hollow core photonic crystal fibers (HCPCFs) as a surface-enhanced Raman spectroscopy (SERS) platform for investigating the ligand exchange process on the surface of gold na...
- Guided entropy mode Rayleigh scattering in optical fibers
[作者：Okusaga, O; Cahill, J; Docherty, A; Zhou, W; Menyuk, CR,期刊：OPTICS LETTERS, 页码：683-685 , 文章类型： Article，,卷期：2012年37-4]
- Rayleigh scattering in optical fibers has the potential to degrade the performance of low-noise opto-electronic systems. In this Letter, we measure the Rayleigh gain spectrum of optical fibers. Our data show the gain ban...
- Direct laser interference ablating nanostructures on organic crystals
[作者：Fang, HH; Ding, R; Lu, SY; Wang, L; Feng, J; Chen, QD; Sun, HB,期刊：OPTICS LETTERS, 页码：686-688 , 文章类型： Article，,卷期：2012年37-4]
- Two-beam interference ablation of 1,4-Bis(4-methylstyryl) benzene organic crystal by short laser pulses (10 ns, 355 nm) is presented. The influence of laser fluence, interference period, and pulse number on the morpholog...
- Fractional second-harmonic Talbot effect
[作者：Chen, ZH; Liu, DM; Zhang, Y; Wen, JM; Zhu, SN; Xiao, M,期刊：OPTICS LETTERS, 页码：689-691 , 文章类型： Article，,卷期：2012年37-4]
- We demonstrate the fractional second-harmonic (SH) Talbot effect in a hexagonally poled LiTaO3 crystal. We carefully record the SH Talbot images at 1/2, 1/3, and 1/4 Talbot lengths, which are well matched with the simula...
- Origin of strong white electroluminescence from dense Si nanodots embedded in silicon nitride
[作者：Huang, R; Song, J; Wang, X; Guo, YQ; Song, C; Zheng, ZH; Wu, XL; Chu, PK,期刊：OPTICS LETTERS, 页码：692-694 , 文章类型： Article，,卷期：2012年37-4]
- Strong white electroluminescence (EL) from SiN-based devices containing Si nanodots with a density of more than 4.6 x 10(12)/cm(2) was investigated. The white EL illustrates enhanced light emission with increasing applie...
- Multiband wavelength demultiplexer based on digital planar holography for on-chip spectroscopy applications
[作者：Peroz, C; Calo, C; Goltsov, A; Dhuey, S; Koshelev, A; Sasorov, P; Ivonin, I; Babin, S; Cabrini, S; Yankov, V,期刊：OPTICS LETTERS, 页码：695-697 , 文章类型： Article，,卷期：2012年37-4]
- A novel type of multiband wavelength demultiplexer for on-chip spectroscopy applications is proposed, and first results of the device fabrication and characterization are reported. The devices are based on computer-desig...
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