scholarly journals Effect of Linewidth Enhancement Factor on Fringe in a Self-Mixing Signal and Improved Estimation of Feedback Factor in Laser Diode

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 28886-28893 ◽  
Author(s):  
Cholhyon Kim ◽  
Cholman Lee ◽  
Kwonhyok O
Keyword(s):  
Laser Diode ◽  
Enhancement Factor ◽  
Feedback Factor ◽  
Linewidth Enhancement Factor ◽  
Linewidth Enhancement

Effect of Linewidth Enhancement Factor on Doppler Beat Waveform Obtained from a Self-Mixing Laser Diode

2000 ◽  
Vol 7 (6) ◽  
pp. 550-554 ◽  
Author(s):  
Sahin Kaya ÖZDEMIR ◽  
Shigenobu SHINOHARA1 ◽  
Hirofumi Yoshida
Keyword(s):  
Laser Diode ◽  
Enhancement Factor ◽  
Linewidth Enhancement Factor ◽  
Linewidth Enhancement

Linewidth Enhancement Factor Measurement of a Fabry Perot Laser Diode through Narrowband Optical FM Generation

2017 ◽  
Vol 38 (2) ◽  
Author(s):  
Taraprasad Chattopadhyay ◽  
Prosenjit Bhattacharyya ◽  
Chiranjib Ghosh
Keyword(s):  
Laser Diode ◽  
Enhancement Factor ◽  
Optical Intensity ◽  
Simple Method ◽  
Linewidth Enhancement Factor ◽  
Fabry Perot ◽  
Factor Measurement ◽  
Index Level ◽  
Linewidth Enhancement ◽  
Direct Current Modulation

AbstractThis paper presents a simple method of linewidth enhancement factor (LEF) measurement of a semiconductor laser through narrowband optical frequency modulation (FM) generation by direct modulation. The narrowband optical FM is generated by using small-amplitude direct-current modulation, thereby limiting the resultant optical intensity modulation index level typically within 10%. The LEF is found to decrease linearly with the increase in bias current of the laser diode above threshold.

First Direct Observation of Small Linewidth Enhancement Factor of Fabry–Perot Quantum Cascade Laser

2008 ◽  
Vol 47 (3) ◽  
pp. 1606-1608 ◽  
Author(s):  
Naoki Kumazaki ◽  
Yohei Takagi ◽  
Mikito Ishihara ◽  
Kenichi Kasahara ◽  
Naota Akikusa ◽  
...  
Keyword(s):  
Direct Observation ◽  
Quantum Cascade Laser ◽  
Enhancement Factor ◽  
Linewidth Enhancement Factor ◽  
Quantum Cascade ◽  
Fabry Perot ◽  
Linewidth Enhancement
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