Lasers ♦ news digest
delivering higher performance across a wider wavelength range and brightness — and we’ve also developed a new family member for the BPM/ BLM mini-cooler series that represents the smallest footprint and highest CW power level of any competitive solution.”
The new BLM component, the BLM9xx/10xx is claimed to represent the industry’s smallest footprint and highest power conductively cooled product. This laser diode delivers up to 120W at the 910 to 1070nm wavelength range and replaces micro- channel coolers in horizontal configurations for DPSS pumping and direct diode applications.
To ensure easy integration, the new BLM9xx/10xx replaces soldering or wire bonding with mechanical electrical connection and mounting.
The OPC880, the new OPC family member is a 60W CW low filling factor bar at the 875nm to 890nm wavelength range and will be used in Oclaro’s own Prosario collimated modules, fibre coupled packages and will also be available as a passively cooled bar to Oclaro customers. By expanding the wavelength range of the existing OPC family, the new OPC880 enables Oclaro to enter the new and growing 880nm neodymium-YAG and neodymium-vanadate pumping market.
Researchers conjure up nanocavity super efficient laser
The GaAs/InAs laser is suited to optical communication systems and could herald a new era in low-energy data interconnects that communicate with light as well as electrons.
In the push towards ever-smaller and ever-faster data transmission technology, a team of Stanford electrical engineers has produced a nanoscale laser that they claim is much faster and vastly more energy efficient than anything available today.
To the Silicon Valley mantra of “faster, smaller” semiconductors, you can now add “more efficient.” The electrical data interconnections inside the computers of America’s massive datacentres consume huge amounts of electricity, and there
is a technological drive afoot to reduce that consumption.
To that end, Stanford researchers have unveiled a tiny, highly efficient semiconductor laser that could herald a new era in low-energy data interconnects that communicate with light as well as electrons.
The wafer’s holes ‘act like a hall of mirrors to reflect photons back toward the center of the laser,’ said Jelena Vuckovic, an associate professor of electrical engineering. (Courtesy of Jelena Vuckovic : Wafer with holes)
“Today’s electrical data transmission circuits require a lot of energy to transmit a bit of information and are, relatively speaking, slow,” said Jelena Vuckovic, an associate professor of electrical engineering at Stanford working on the new generation of nanoscale lasers.
She and her team, including Stanford graduate students Bryan Ellis and Gary Shambat, in collaboration with the research groups of James Harris at Stanford and Eugene Haller at the University of California-Berkeley, introduced their laser in a paper just published in Nature Photonics.
Vuckovic is working on a type of data transmitter known as a photonic-crystal laser. These lasers are particularly promising, not just for their speed and size, but because they operate at low thresholds and don’t use much energy.
“We’ve produced a nanoscale optical data transmitter, a laser that uses 1,000 times less energy and is 10 times faster than the very best laser technologies in commercial use today,” said the professor. “Better yet, we believe we can
June 2011
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