Abstract
| Language | English |
|---|---|
| Article number | 241103 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 99 |
| Issue number | 24 |
| Early online date | 12 Dec 2011 |
| DOIs | |
| Publication status | Published - 2011 |
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Keywords
- gratings
- substrates
- laser excitation
- quantum dot lasers
- pump lasers
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Flexible distributed-feedback colloidal quantum dot laser. / Chen, Yujie; Guilhabert, Benoit Jack Eloi; Herrnsdorf, Johannes; Zhang, Yanfeng; Mackintosh, Allan; Pethrick, Richard; Gu, Erdan; Laurand, Nicolas; Dawson, Martin.
In: Applied Physics Letters, Vol. 99, No. 24, 241103, 2011.Research output: Contribution to journal › Article
TY - JOUR
T1 - Flexible distributed-feedback colloidal quantum dot laser
AU - Chen, Yujie
AU - Guilhabert, Benoit Jack Eloi
AU - Herrnsdorf, Johannes
AU - Zhang, Yanfeng
AU - Mackintosh, Allan
AU - Pethrick, Richard
AU - Gu, Erdan
AU - Laurand, Nicolas
AU - Dawson, Martin
PY - 2011
Y1 - 2011
N2 - Flexible distributed feedback colloidal quantum dot laser patterned by a submicron grating structure is reported. An exposed standard commercial blank digital versatile disk (DVD) was used as the mask to fabricate a submicron scale grating structure, providing a simple and low-cost approach. A UV transparent polymerisable host matrix, 1,4-cyclohexanedimethanol divinyl ether (CHDV), was then photo-cured to replicate the DVD grating structure and peeled off from the mask, resulting in a flexible grating. The thickness of the grating substrate can be controlled in the range of 50 to 300 μm. A frequency-tripled Q-switched Nd:YAG laser (5-ns pulse, 10-Hz repetition rate and 355-nm excitation wavelength) was then used to photo-pump the CQD sample. The emission evolution was investigated and a 4 mJ/cm2 lasing threshold was found, comparing favourably to other reports of CQD lasers. The polarisation of the laser emission revealed that the DFB CQD laser favours a linearly polarized (TE) emission. During the experiment, the laser performance, operating above lasing threshold at room temperature and ambient atmosphere, was stable over more than 10,000 pump pulses.
AB - Flexible distributed feedback colloidal quantum dot laser patterned by a submicron grating structure is reported. An exposed standard commercial blank digital versatile disk (DVD) was used as the mask to fabricate a submicron scale grating structure, providing a simple and low-cost approach. A UV transparent polymerisable host matrix, 1,4-cyclohexanedimethanol divinyl ether (CHDV), was then photo-cured to replicate the DVD grating structure and peeled off from the mask, resulting in a flexible grating. The thickness of the grating substrate can be controlled in the range of 50 to 300 μm. A frequency-tripled Q-switched Nd:YAG laser (5-ns pulse, 10-Hz repetition rate and 355-nm excitation wavelength) was then used to photo-pump the CQD sample. The emission evolution was investigated and a 4 mJ/cm2 lasing threshold was found, comparing favourably to other reports of CQD lasers. The polarisation of the laser emission revealed that the DFB CQD laser favours a linearly polarized (TE) emission. During the experiment, the laser performance, operating above lasing threshold at room temperature and ambient atmosphere, was stable over more than 10,000 pump pulses.
KW - gratings
KW - substrates
KW - laser excitation
KW - quantum dot lasers
KW - pump lasers
UR - http://www.opticsinfobase.org/abstract.cfm?URI=CLEO/Europe-2011-CB8_2
U2 - 10.1063/1.3659305
DO - 10.1063/1.3659305
M3 - Article
VL - 99
JO - Applied Physics Letters
T2 - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 24
M1 - 241103
ER -