Kim Se-Heon, Choi Jae-Hoon, Lee Seung-Kon, Kim Shin-Hyun, Yang Seung-Man, Lee Yong-Hee, Seassal Christian, Regrency Philippe, Viktorovitch Pierre
Center for Integrated Optofluidic Systems, Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 305-701, Korea.
Opt Express. 2008 Apr 28;16(9):6515-27. doi: 10.1364/oe.16.006515.
We demonstrate a new type of photonic crystal nanolaser incorporated into a microfluidic chip, which is fabricated by multilayer soft lithography. Experimentally, room-temperature continuous-wave lasing operation was achieved by integrating a photonic crystal nanocavity with a microfluidic unit, in which the flow medium both enhances the rate of heat removal and modulates the refractive index contrast. Furthermore, using the proposed system, dynamic modulation of the resonance wavelength and far-field radiation pattern can be achieved by introducing a bottom reflector across which various fluids with different refractive indices are forced to flow. In particular, by maintaining a gap between the reflector and the cavity equal to the emission wavelength, highly efficient unidirectional emission can be obtained. The proposed nanolasers are ideal platforms for highfidelity biological and chemical detection tools in micro-total-analytical or lab-on-a-chip systems.
我们展示了一种新型的集成在微流控芯片中的光子晶体纳米激光器，该芯片通过多层软光刻技术制造。在实验中，通过将光子晶体纳米腔与微流控单元集成，实现了室温连续波激光运行，其中流动介质既提高了散热速率又调制了折射率对比度。此外，使用所提出的系统，通过引入底部反射器，使具有不同折射率的各种流体在其上强制流动，可以实现共振波长和远场辐射图案的动态调制。特别是，通过保持反射器与腔之间的间隙等于发射波长，可以获得高效的单向发射。所提出的纳米激光器是微全分析或芯片实验室系统中高保真生物和化学检测工具的理想平台。
