Single-longitudinal-mode semiconductor laser with digital and mode-hop-free fine-tuning mechanisms

Autor:	Ru-Pin Pan, Ci-Ling Pan, Yea-Feng Lin, Tsung-Sheng Shih, Yu-Ping Lan
Rok vydání:	2009
Předmět:	Materials science business.industry Laser Atomic and Molecular Physics and Optics law.invention Semiconductor laser theory Longitudinal mode Wavelength Optics Liquid crystal law Fiber laser Optoelectronics business Diffraction grating Diode
Zdroj:	Optics express. 12(26)
ISSN:	1094-4087
Popis:	We report a novel external cavity laser diode (lambda= 1.5 mum). An intra-cavity liquid crystal pixel mirror allows digitally tuning of the laser wavelength to more than 40 wavelength channels of 100 GHz spacing according to the International Telecommunication Union (ITU) grid. Laser wavelength can further be fine-tuned by varying the driving voltages applied to an intra-cavity planar nematic liquid crystal phase plate. With a cell 52.3 mum in thickness, the output frequency can be continuously tuned over 1.89 GHz. The root-mean-square voltage required for driving the phase plate was from 1.00 to 4.56 volts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a18d86ae9128ec5b8144e51b502a8f0b https://pubmed.ncbi.nlm.nih.gov/19488293 Zobrazit plný text záznamu