Title :
Optical spectroscopy of individual segments of interband cascade diode laser Nanostacks®
Author :
Malyarchuk, V. ; Tomm, J.W. ; Lienau, Ch ; Behringer, M. ; Luft, J.
Author_Institution :
Max-Born-Inst., Berlin, Germany
Abstract :
Monolithically stacked high-power laser structures, i.e. device structures that include two or more nominally identical waveguide segments separated by a specially designed tunnel junction, are designed as high-brightness coherent radiation source predominantly for pulsed operation applications. Additional technological advantages are related to reduced operation currents that need to be provided by the power supply. Such so-called Nanostack® structures are investigated by near-field scanning optical microscopy (NSOM). This method provides straightforward and separate access to the properties of both optically active segments. Device emission, namely electroluminescence (EL) and lasing, as well as photoluminescence (PL) and photocurrent (PC) data are recorded separately from both device segments with ultra-high spatial resolution.
Keywords :
electroluminescence; high-speed optical techniques; near-field scanning optical microscopy; photoemission; photoluminescence; semiconductor lasers; spectroscopy; EL emission; Nanostacks® structures; PL signal; coherent radiation source; device emission; electroluminescence; high-brightness; interband cascade diode laser; laser waveguide segment; lasing; monolithically stacked high-power laser structures; near-field scanning optical microscopy; optical spectroscopy; optically active segment; photocurrent data; photoluminescence; pulsed operation application; tunnel junction; ultra-high spatial resolution; Diode lasers; Optical design; Optical microscopy; Optical recording; Optical waveguides; Quantum cascade lasers; Spectroscopy; Stimulated emission; Waveguide junctions; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1312219