- Tight focusing with a binary microaxicon
[作者:Kotlyar, VV; Stafeev, SS; O'Faolain, L; Soifer, VA,期刊:OPTICS LETTERS, 页码:3100-3102 , 文章类型: Article,,卷期:2011年36-16]
- Using a near-field scanning microscope (NT-MDT) with a 100 nm aperture cantilever held 1 mu m apart from a microaxicon of diameter 14 mu m and period 800 nm, we measure a focal spot resulting from the illumination by a l...
- Fraunhofer diffraction of light with orbital angular momentum by a slit
[作者:Ferreira, QS; Jesus-Silva, AJ; Fonseca, EJS; Hickmann, JM,期刊:OPTICS LETTERS, 页码:3106-3108 , 文章类型: Article,,卷期:2011年36-16]
- We study the Fraunhofer diffraction problem while taking into account the orbital angular momentum of light. In this case, the phase singularity of the light beam is incident on the slit in two different cases: in one, i...
- Frequency noise of free-running 4.6 mu m distributed feedback quantum cascade lasers near room temperature
[作者:Tombez, L; Di Francesco, J; Schilt, S; Di Domenico, G; Faist, J; Thomann, P; Hofstetter, D,期刊:OPTICS LETTERS, 页码:3109-3111 , 文章类型: Article,,卷期:2011年36-16]
- The frequency noise properties of commercial distributed feedback quantum cascade lasers emitting in the 4.6 mu m range and operated in cw mode near room temperature (277 K) are presented. The measured frequency noise po...
- Wide measurement range scanning heterodyne interferometer utilizing astigmatic position sensing scheme
[作者:Park, Y; Kim, KE; Kim, SJ; Park, JG; Joo, YH; Shin, BH; Lee, SY; Cho, K,期刊:OPTICS LETTERS, 页码:3112-3114 , 文章类型: Article,,卷期:2011年36-16]
- A scanning heterodyne I/Q-interferometer scheme is proposed to overcome phase ambiguity caused by the periodic nature of its phase-dependent signal. A position sensing scheme using an astigmatic method in the confocal ar...
- Compact microfiber Bragg gratings with high-index contrast
[作者:Liu, YX; Meng, C; Zhang, AP; Xiao, Y; Yu, HK; Tong, LM,期刊:OPTICS LETTERS, 页码:3115-3117 , 文章类型: Article,,卷期:2011年36-16]
- We fabricate fiber Bragg grating (FBG) in microfibers (MFs) using focused ion beam milling technique. By periodically etching 100 nm-depth grooves on the surface of silica MFs with diameters less than 2 mu m, evident gra...
- High average power spectral beam combining of four fiber amplifiers to 8.2 kW
[作者:Wirth, C; Schmidt, O; Tsybin, I; Schreiber, T; Eberhardt, R; Limpert, J; Tunnermann, A; Ludewigt, K; Gowin, M; ten Have, E; Jung, M,期刊:OPTICS LETTERS, 页码:3118-3120 , 文章类型: Article,,卷期:2011年36-16]
- We report on the incoherent beam combination of the four narrow-linewidth fiber amplifier chains running at different wavelengths. Each main amplifier stage consists of a large-mode-area photonic crystal fiber delivering...
- Active phasing a nine-element 1.14 kW all-fiber two-tone MOPA array using SPGD algorithm
[作者:Wang, XL; Zhou, P; Ma, YX; Leng, JY; Xu, XJ; Liu, ZJ,期刊:OPTICS LETTERS, 页码:3121-3123 , 文章类型: Article,,卷期:2011年36-16]
- We demonstrated active phase locking a nine-element 1.14 kW all-fiber master-oscillator power amplifier (MOPA) array using the stochastic parallel gradient descent (SPGD) blind optimization algorithm. Two spectrally comb...
- Efficient image projection by Fourier electroholography
[作者:Makowski, M; Ducin, I; Kakarenko, K; Kolodziejczyk, A; Siemion, A; Siemion, A; Suszek, J; Sypek, M; Wojnowski, D,期刊:OPTICS LETTERS, 页码:3018-3020 , 文章类型: Article,,卷期:2011年36-16]
- An improved efficient projection of color images is presented. It uses a phase spatial light modulator with three iteratively optimized Fourier holograms displayed simultaneously-each for one primary color. This spatial ...
- Wavefront coding technique for controlling thermal defocus aberration in an infrared imaging system
[作者:Chen, SQ; Fan, ZG; Xu, ZG; Zuo, BJ; Wang, SA; Xiao, HS,期刊:OPTICS LETTERS, 页码:3021-3023 , 文章类型: Article,,卷期:2011年36-16]
- We use a wavefront coding approach to control thermal defocus aberration in an IR imaging system. The design method of athermalized system using a wavefront coding technique is discussed. An athermalized long wave IR opt...
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