Scientists have moved a step closer to producing electrically-powered plastic laser diodes that could be used in Blu-ray players.
Currently the laser diodes in such consumer optical storage devices are made out of inorganic semiconductors like gallium arsenide, gallium nitride and other semiconductor alloys related to them.
Now, researchers at Imperial College in London have demonstrated a class of plastic semiconductor materials that may allow the low-cost manufacture of electrically-powered plastic laser diodes.
As well as reducing the cost of devices such as Blu-ray players the development could allow plastic laser diodes to operate across a much more substantial wavelength range.
Professor Donal Bradley, lead author of the new study and head of Imperial’s Department of Physics said the development was “a real breakthrough”.
“In the past, designing polymers for electronic and optoelectronic devices often involved maximising one key property in a material at a time,” he said.
“When people tried to develop plastic semiconductors for laser diode use, they found that optimising the material’s charge transporting properties had a detrimental effect on its ability to efficiently emit light, and vice versa.”
The study’s co-author, Dr Paul Stavrinou, added: “The modifications made to the PFO structure have allowed us to convincingly overcome this perceived incompatibility and they suggest that plastic laser diodes might now be a realistic possibility.”
One of the main stumbling blocks to using plastic semiconductor laser diodes is that, until now, no plastics had been found that could sustain a large enough current whilst also supporting the efficient light emission needed to produce a laser beam.
Now the Imperial physicists have done just that. The plastics studied, synthesised by the Sumitomo Chemical Company in Japan, are closely related to PFO, an archetype blue-light emitting material.
By making subtle changes in the plastic’s chemical structure the researchers produced a material that transports charges 200 times better than before, without compromising its ability to efficiently emit light – indeed the generation of laser light was actually improved.
The research team argues that the future laser diodes made out of the material they have developed may generate light emissions covering the spectrum all the way from near ultraviolet to near infrared.
Tag: blu-ray
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Plastics breakthrough could help cut cost of Blu-ray players
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Samsung continues re-structuring following management changes
Samsung’s home-theater, DVD and Blu-ray-player businesses will be merged with the TV section as part of moves to change the way it operates.
Samsung Electronics Co, the flagship company of South Korean conglomerate Samsung Group, said the re-organisation within the digital-media division was part of a wider re-structuring.
Earlier this month, the executive who led Samsung Electronics Co to the top of the global electronics industry in the past decade, Yun Jong-yong, resigned as vice chairman and chief executive.
In April, the company’s chairman left abrubtly as part of a broad management shuffle.
Lee Yoon-woo, 62, the former chief of its chip division and a vice chairman, succeeded Mr. Yun. -
Blue Ray Technologies expansion includes Hollywood plant to serve new BD and HD demand
Blue Ray Technologies is planning to open multiple Blu-Ray disc production facilities across the U.S, starting with a facility near Hollywood to be close to the indie and major studios that have now all adopted Blu-ray.
The new facilities are designed to be capable of handling the next generation of movie and game discs, Blue-ray 2.0, which gives an interactive web dimension to the consumer, and offer up to “five layers of entertainment”, according to BRT founder Erick Hansen.
Erick Hansen, founder BRT Hansen, whose Hollywood move puts him closer to the studios he has worked with for years, has also been in negotiations with the major studios through an affiliated company for downloadable high definition content over the Internet.
While being a pioneer in DVD and now championing Blu-ray discs, Hansen also believes in delivering the best in movie and game content in whatever form the consumer wants it.
With the end of the format war, and 70% of the US having bought or buying HD screens (according to Nielsen figures) there is an “overwhelming” demand now for instant products in Blu-ray. Hansen says this is the present and future in the arena.
He said this means multiple production and shipping locations are needed to serve the demand, something never done before at this end of the industry.
Especially for TV shows, ranging from major sports reality TV shows, audiences want the programmes quickly.
The company is upgrading its Spokane, WA, plant and the new facilities will be closer to Hollywood studios and networks.
“We are looking for additional facilities in Southern California for the overwhelming demand for Blu-ray,” said Hansen.
He added: “We will be looking to add additional capacity in the Mid-West and East Coast.”
BRT’s expansion plans extend beyond the US: “By the end of the year, we will be working with strategic partnerships in Europe to build a world-class global digital distribution system.” -
Chinese manufacturers given approval to produce Blu-ray discs
Eleven Chinese disc manufacturers, including TCL, Malata and Desay, have been authorized by Blu-ray Disc Association to produce Blue-Ray discs, CDs, and disc players next year.
According to president of Blu-ray Disc Association, each of the manufacturers have now turned to BD development since Toshiba’s withdrawal from the HD DVD camp in February this year and BDA’s member number has increased to 187 while that of International DVD Forum has decreased to 163 from 240.
It is estimated that the demand for consumer electronics and computers adopted with BD technology will reach 5.3 million this year and top 11 million by 2009.
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Blue Ray Technologies expansion includes Hollywood plant to serve new BD and HD demand
Blue Ray Technologies expansion includes Hollywood plant to serve new BD and HD demand
Blue Ray Technologies is planning to open multiple Blu-Ray disc production facilities across the U.S, starting with a facility near Hollywood to be close to the indie and major studios that have now all adopted Blu-ray.
The new facilities are designed to be capable of handling the next generation of movie and game discs, Blue-ray 2.0, which gives an interactive web dimension to the consumer, and offer up to “five layers of entertainment”, according to BRT founder Erick Hansen.
Hansen, whose Hollywood move puts him closer to the studios he has worked with for years, has also been in negotiations with the major studios through an affiliated company for downloadable high definition content over the Internet.
While being a pioneer in DVD and now championing Blu-ray discs, Hansen also believes in delivering the best in movie and game content in whatever form the consumer wants it.
With the end of the format war, and 70% of the US having bought or buying HD screens (according to Nielsen figures) there is an “overwhelming” demand now for instant products in Blu-ray. Hansen says this is the present and future in the arena.
He said this means multiple production and shipping locations are needed to serve the demand, something never done before at this end of the industry.
Especially for TV shows, ranging from major sports reality TV shows, audiences want the programmes quickly.
The company is upgrading its Spokane, WA, plant and the new facilities will be closer to Hollywood studios and networks.
“We are looking for additional facilities in Southern California for the overwhelming demand for Blu-ray,” said Hansen.
He added: “We will be looking to add additional capacity in the Mid-West and East Coast.”
BRT’s expansion plans extend beyond the US: “By the end of the year, we will be working with strategic partnerships in Europe to build a world-class global digital distribution system.”