Strong waveguiding is observed due to. In integrated photonics by using direct writing of femtosecondultrafast laser pulses optical waveguides can be produced in a wide variety of optical materials.
Pdf Excimer Laser Micromachining Of Linbo3 For Optical And
Experiment And Prediction Of Ablation Depth In Excimer Laser
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Waveguide depth and index proles.
Waveguides laser micromachining. We report on the fabrication of hollow optical waveguides in fused silica using femtosecond laser micromachining. Laser micromachining for efficient biocompatible waveguides. A tapered lensed fiber is used to couple laser light at a wavelength of 6328 nm into these waveguides within a water environment. The waveguides are fabricated by index change. A dichroitic mirror was used to guide the laser beam along the desired 3 d. The active waveguide can be a laser with integrated bragg gratings an optical amplifier or an amplified spontaneous emission source. 1 fabrication of polarization independent single mode waveguides in lithium niobate crystal with femtosecond laser pulses jia qi12 peng wang12 yang liao14 wei chu1 zhengming liu12 zhaohui wang1 lingling qiao1 ya cheng135 1state key laboratory of high field laser physics shanghai institute of optics and fine mechanics chinese academy of sciences shanghai 201800 china. Femtosecond laser micromachining offers a platform where all three base elements of the acousto optic modulator can be embedded into the lithium niobate. By tightly focusing 27 fs laser pulses from a tisapphire oscillator with 13 nj pulse energy at 93 mhz repetition rate we are able to fabricate optical waveguides inside hydrogel polymers containing 36 water by weight. We study the conditions for controlling chromophore degradation during the micromachining of pmma doped with each chromophore. The precise machining threshold provides high quality wall finish. The same micromachining workstation can be used for ablation and for direct writing index changes. Figure 1a depicts the process of the femtosecond laser micromachining. Furthermore we successfully used fs micromachining to fabricate optical waveguides within a bulk sample of pmma doped with these azochromophores. Femtosecond laser micromachining was first demonstrated in 1994 when a femtosecond laser was used to ablate micrometre sized features on silica and silver surfaces 12in less than ten years the.
To carve out the waveguides they used a femtosecond 60 mw tisapphire laser tuned to 680 nm to initiate the polymerization reaction of the phenylacetylene in the pdms slab through two photon absorption. The novel ridge waveguides in linbo 3 crystal are fabricated by all laser micromachining technique. With diverse parameters the formed waveguides may possess different configurations. Focused fs laser pulse. We explore femtosecond laser micromachining as an alternative to proton exchange in the fabrication of waveguides for anisotropic leaky mode modulators. We show that in such hollow waveguides high intensity femtosecond laser beams can be guided with low optical loss.
Planar Waveguide And Slab Lasers Optoelectronics Research
Laser Micromachining Ultrafast Pulses Create Superwicking
Integrating Optical Sensing Into Lab On A Chip Systems
Pdf Metallic Nanoparticles Grown In The Core Of Femtosecond
Ridge Waveguide Laser In Nd Linbo3 By Zn Diffusion And
Figure 1 From 1 9 µm Waveguide Laser Fabricated By Ultrafast
Note Femtosecond Laser Micromachining Of Straight And
Optical Waveguides Fabricated In Cr Lisaf By Femtosecond
Nonlinear Optical Properties And Femtosecond Laser
Nonlinear Optical Properties And Femtosecond Laser
Figure 5 From Laser Micromachining Of Silicon A New
Laser Micromachining Workstation For Laboratory Femtolab
Fabricating Waveguide Bragg Gratings Wbgs In Bulk
High Repetition Rate Femtosecond Laser Micromachining Of Low
Pdf Fabrication Of Hollow Optical Waveguides In Fused