scholarly journals Influence of the excitation area on the thresholds of organic second-order distributed feedback lasers

2012 ◽  
Vol 101 (22) ◽  
pp. 223303 ◽  
Author(s):  
Eva M. Calzado ◽  
José M. Villalvilla ◽  
Pedro G. Boj ◽  
José A. Quintana ◽  
Victor Navarro-Fuster ◽  
...  
Keyword(s):  
Second Order ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers

Realization of optically pumped second‐order GaInN‐distributed‐feedback lasers

1996 ◽  
Vol 69 (14) ◽  
pp. 2068-2070 ◽  
Author(s):  
R. Hofmann ◽  
H.‐P. Gauggel ◽  
U. A. Griesinger ◽  
H. Gräbeldinger ◽  
F. Adler ◽  
...  
Keyword(s):  
Second Order ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Optically Pumped

Effect of varying threshold gain on second order intermodulation distortion in distributed feedback lasers

1990 ◽  
Vol 26 (20) ◽  
pp. 1720 ◽  
Author(s):  
H. Kawamura ◽  
K. Kamite ◽  
H. Yonetani ◽  
S. Ogita ◽  
H. Soda ◽  
...  
Keyword(s):  
Second Order ◽  
Distributed Feedback ◽  
Intermodulation Distortion ◽  
Distributed Feedback Lasers ◽  
Threshold Gain

Film thickness and grating depth variation in organic second-order distributed feedback lasers

2012 ◽  
Vol 112 (4) ◽  
pp. 043104 ◽  
Author(s):  
Víctor Navarro-Fuster ◽  
Igor Vragovic ◽  
Eva M. Calzado ◽  
Pedro G. Boj ◽  
José A. Quintana ◽  
...  
Keyword(s):  
Film Thickness ◽  
Second Order ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Depth Variation ◽  
Grating Depth

scholarly journals Low-Threshold Microlasers Based on Holographic Dual-Gratings

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1530
Author(s):  
Tianrui Zhai ◽  
Liang Han ◽  
Xiaojie Ma ◽  
Xiaolei Wang
Keyword(s):  
Laser Cavity ◽  
Second Order ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Lasing Threshold ◽  
First Order ◽  
Cavity Output ◽  
Colloidal Quantum Dot ◽  
Low Threshold ◽  
High Level

Among the efforts to improve the performances of microlasers, optimization of the gain properties and cavity parameters of these lasers has attracted significant attention recently. Distributed feedback lasers, as one of the most promising candidate technologies for electrically pumped microlasers, can be combined with dual-gratings. This combination provides additional freedom for the design of the laser cavity. Here, a holographic dual-grating is designed to improve the distributed feedback laser performance. The holographic dual-grating laser consists of a colloidal quantum dot film with two parallel gratings, comprising first-order (210 nm) and second-order (420 nm) gratings that can be fabricated easily using a combination of spin coating and interference lithography. The feedback and the output from the cavity are controlled using the first-order grating and the second-order grating, respectively. Through careful design and analysis of the dual-grating, a balance is achieved between the feedback and the cavity output such that the lasing threshold based on the dual-grating is nearly half the threshold of conventional distributed feedback lasers. Additionally, the holographic dual-grating laser shows a high level of stability because of the high stability of the colloidal quantum dots against photobleaching.

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