Low threshold blue conjugated polymer lasers with first- and second-order distributed feedback

2006 ◽  
Vol 89 (20) ◽  
pp. 201108 ◽  
Author(s):  
C. Karnutsch ◽  
C. Gýrtner ◽  
V. Haug ◽  
U. Lemmer ◽  
T. Farrell ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Second Order ◽  
Distributed Feedback ◽  
Low Threshold

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.

Extremely low threshold current 1.52 μm InGaAsP/InP MS-DFB lasers with second-order grating

1986 ◽  
Vol 22 (15) ◽  
pp. 802 ◽  
Author(s):  
H. Burkhard ◽  
E. Kuphal ◽  
H.W. Dinges
Keyword(s):  
Threshold Current ◽  
Second Order ◽  
Low Threshold

scholarly journals Correction to: Low-threshold topological nanolasers based on the second-order corner state

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Weixuan Zhang ◽  
Xin Xie ◽  
Huiming Hao ◽  
Jianchen Dang ◽  
Shan Xiao ◽  
...  
Keyword(s):  
Second Order ◽  
Low Threshold

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

Photopumped Organic Solid-State Dye Laser with a Second-Order Distributed Feedback Cavity

2001 ◽  
Vol 40 (Part 2, No. 8A) ◽  
pp. L799-L801 ◽  
Author(s):  
Musubu Ichikawa ◽  
Yuji Tanaka ◽  
Naotoshi Suganuma ◽  
Toshiki Koyama ◽  
Yoshio Taniguchi
Keyword(s):  
Solid State ◽  
Dye Laser ◽  
Second Order ◽  
Distributed Feedback ◽  
Organic Solid ◽  
Solid State Dye Laser ◽  
Organic Solid State
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