Scientists Finally Created a White Laser-and It Could Light Your Home

[wedlpine]

Not sure if this has been posted already. Very interesting.

Scientists Finally Created a White Laser-and It Could Light Your Home
http://gizmodo.com/scientists-finally-created-a-white-laser-and-it-could-l-1721027962

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[JasonJ]

Intriguing.. sentence that caught my attention: "There are still some challenges to overcome before white lasers become a domestic reality—not least the fact that the current device is powered by light rather than electricity."

Powered by light... Tell me more!

 

[more_vampires]

Intriguing.. sentence that caught my attention: "There are still some challenges to overcome before white lasers become a domestic reality—not least the fact that the current device is powered by light rather than electricity."

Powered by light... Tell me more!

White light? Powered by light, not electricity? Can light your home? Sounds like they have invented the window.

Remember the first white laser writeup I read. It blew my mind. It's entanglement of multiple laser colors and it comes out visibly white, but a spectrometer shows weirdness.

 

[JasonJ]

Lol a window. Yeah, that sounds about right! Lol good one.

 

[KeepingItLight]

Remember the first white laser writeup I read. It blew my mind. It's entanglement of multiple laser colors and it comes out visibly white, but a spectrometer shows weirdness.

Right. I kept looking for some mention of CRI, but found none.

 

[JoeSW]

Right. I kept looking for some mention of CRI, but found none.

From this article: http://phys.org/news/2015-07-world-white-lasers.html

"Researchers at Arizona State University have solved the puzzle. They have proven that semiconductor lasers are capable of emitting over the full visible color spectrum, which is necessary to produce a white laser."

This would suggest a potentially high CRI! I could be wrong here, but I can't wait for a first handheld white laser light! Maybe in 10 to 20 years time?

 

[KeepingItLight]

From this article:http://phys.org/news/2015-07-world-white-lasers.html

"Researchers at Arizona State University have solved the puzzle. They have proven that semiconductor lasers are capable of emitting over the full visible color spectrum, which is necessary to produce a white laser."

This would suggest a potentially high CRI! I could be wrong here, but I can't wait for a first handheld white laser light! Maybe in 10 to 20 years time?

Very interesting read. Here is a quote from the article you linked:

"Our goal is to achieve a single semiconductor piece capable of laser operation in the three fundamental lasing colors. The piece should be small enough, so that people can perceive only one overall mixed color, instead of three individual colors," said Fan. "But it was not easy."

Read more at: http://phys.org/news/2015-07-world-white-lasers.html#jCp
​

That still leaves me unsure about CRI. I understand how you can create white light by blending three monochromatic lasers that are red, green, and blue. It is not clear to me whether the result would give you the same high-CRI of natural light that contains all wavelengths.

 

[more_vampires]

From this article:http://phys.org/news/2015-07-world-white-lasers.html

"Researchers at Arizona State University have solved the puzzle. They have proven that semiconductor lasers are capable of emitting over the full visible color spectrum, which is necessary to produce a white laser."

This would suggest a potentially high CRI! I could be wrong here, but I can't wait for a first handheld white laser light! Maybe in 10 to 20 years time?

Old news on Laserpointerforums. I'm not sure if the kits are still available, but they were a couple years ago... And yes, I missed out.

Very interesting read. Here is a quote from the article you linked:

"Our goal is to achieve a single semiconductor piece capable of laser operation in the three fundamental lasing colors. The piece should be small enough, so that people can perceive only one overall mixed color, instead of three individual colors," said Fan. "But it was not easy."

Read more at: http://phys.org/news/2015-07-world-white-lasers.html#jCp
​

That still leaves me unsure about CRI. I understand how you can create white light by blending three monochromatic lasers that are red, green, and blue. It is not clear to me whether the result would give you the same high-CRI of natural light that contains all wavelengths.

The "best" one on LPF that I recall used 4 colors. Easily the sickest laser build I've seen!