Title :
Photonic crystal distributed feedback quantum cascade laser fabricated with holographic technique
Author :
Lu, Qianxi ; Zhang, Wensheng ; Wang, Lingfeng ; Liu, Feng-Qi ; Wang, Zhen
Author_Institution :
Key Lab. of Semicond. Mater. Sci., Chinese Acad. of Sci., Beijing
Abstract :
Electrically pumped, edge-emitting, singlemode operation of a two-dimensional photonic crystal distributed feedback (PCDFB) quantum cascade laser emitting at ~7.8 mum is demonstrated. The two-beam holographic technique combined with wet-etching process is successfully used to define a square-lattice PCDFB structure on the top grating layer of the laser. This simple PC fabrication method may open exciting opportunities for the wide application of PCDFB lasers.
Keywords :
crystal structure; distributed feedback lasers; etching; holographic gratings; laser beams; optical fabrication; optical materials; photonic crystals; quantum cascade lasers; PC fabrication method; distributed feedback quantum cascade laser; edge-emitting operation; laser grating layer; square-lattice PCDFB structure; two-beam holographic technique; two-dimensional photonic crystal; wet-etching process;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20093028
