Abstract

A widely tunable dual-mode distributed feedback (DFB) laser fabricated by selective area growth (SAG) technology integrated with Ti heaters was demonstrated. In the device, an original mode spacing of 4 nm was obtained by the simple SAG technology. Ti thin-film heaters were integrated with a novel procedure, which simplifies the fabrication of such heaters greatly. A large electrical resistance of the heaters is obtained at the same time, resulting in a high wavelength tuning efficiency. An accurate mode spacing as small as 0.34 nm and as large as 8.06 nm is achieved, which corresponds to a wide beat frequency range from 42.2 GHz to 1 THz. The simple fabrication process indicates that it is promising for reducing the cost of dual-mode DFB laser in fabricating self-pulsation lasers and THz generators.

© 2013 Optical Society of America

Monolithic dual-mode distributed feedback semiconductor laser for tunable continuous-wave terahertz generation

Namje Kim, Jaeheon Shin, Eundeok Sim, Chul Wook Lee, Dae-Su Yee, Min Yong Jeon, Yudong Jang, and Kyung Hyun Park
Opt. Express 17(16) 13851-13859 (2009)

Heterogeneously integrated III–V/silicon dual-mode distributed feedback laser array for terahertz generation

Haifeng Shao, Shahram Keyvaninia, Mathias Vanwolleghem, Guillaume Ducournau, Xiaoqing Jiang, Geert Morthier, Jean-Francois Lampin, and Gunther Roelkens
Opt. Lett. 39(22) 6403-6406 (2014)

Laterally coupled dual-grating distributed feedback lasers for generating mode-beat terahertz signals

Lianping Hou, Mohsin Haji, Iain Eddie, Hongliang Zhu, and John H. Marsh
Opt. Lett. 40(2) 182-185 (2015)

1.3-μm dual-wavelength DFB laser chip with modulation bandwidth enhancement by integrated passive optical feedback

Fei Guo, Dan Lu, Lu Guo, Songtao Liu, Wu Zhao, Hao Wang, Ruikang Zhang, Qiang Kan, and Chen Ji
Opt. Express 24(25) 28869-28876 (2016)

Heterogeneously integrated III-V/silicon distributed feedback lasers

S. Keyvaninia, S. Verstuyft, L. Van Landschoot, F. Lelarge, G.-H. Duan, S. Messaoudene, J. M. Fedeli, T. De Vries, B. Smalbrugge, E. J. Geluk, J. Bolk, M. Smit, G. Morthier, D. Van Thourhout, and G. Roelkens
Opt. Lett. 38(24) 5434-5437 (2013)