Title :
Mid-infrared photonic-crystal distributed-feedback laser with narrowed emission line and improved beam quality
Author :
Bewley, W.W. ; Felix, C.L. ; Vurgaftman, I. ; Bartolo, R.E. ; Lindle, J.R. ; Meyer, J.R. ; Lee, H. ; Martinelli, R.U.
Author_Institution :
Naval Res. Lab., USA
Abstract :
Recent self-consistent time-domain Fourier-transform (TDFT) simulations showed that a semiconductor laser patterned with a two-dimensional (2D) photonic crystal distributed feedback (PCDFB) grating can maintain strong spatial coherence and high spectral selectivity out to wider stripes than an angled-grating DFB ((α-DFB) laser. Here we report the demonstration of a PCDFB laser with a second order rectangular grating oriented at 20° with respect to the facet normal. The circular features were patterned by optical lithography and reactive-ion etching
Keywords :
Fourier transform optics; diffraction gratings; distributed feedback lasers; infrared sources; laser beams; optical pumping; photolithography; photonic band gap; semiconductor lasers; spectral line narrowing; sputter etching; 2D photonic crystal distributed feedback grating; PCDFB laser; angled-grating DFB laser; beam quality; facet normal; high spectral selectivity; mid-infrared photonic-crystal distributed-feedback laser; narrowed emission line; optical lithography; reactive-ion etching; rectangular grating; self-consistent time-domain Fourier-transform simulations; strong spatial coherence; Distributed feedback devices; Etching; Gratings; Laser feedback; Lithography; Optical feedback; Photonic crystals; Semiconductor lasers; Spatial coherence; Time domain analysis;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969181
