Visible chemical power
The energy of the light laser directly generated by the chemical reaction may soon power the laser that can produce strong visible light.
The first visible recent development.
The chemical optical amplifier marks two.
Scientists around the world have been looking for such systems for ten years.
It also offers the possibility to use lasers in remote areas such as space stations or satellites.
The traditional laser emits coherent light by the current excitation material of the strong pulse.
As we all know, this laser is inefficient and requires a lot of power to operate.
Chemical-driven lasers are expected to produce strong light in a more efficient way.
"This is a long road," says physicist James L . "
Gole of Georgia Institute of Technology in Atlanta led the study.
"What we have done so far is to prove that these lasers amplify the radiation.
The next step, he said, is to build an oscillator consisting of a mirror cavity that reflects light back and forth through the reaction zone.
"This is A major development," said Terry . "
Cool at Cornell University in Ithaca, New York.
A few years ago, who developed the first chemical-powered infrared laser.
Scientists, he says, have tried many different ways, but before Gore's persistence pays off, they have a long record of failure in looking for chemical reactions that cause molecules to be in an excited state that allows light amplification.
In Gole's pulse amplifier, tl atoms gain energy from collisions of excited molecules formed by reactions between ozone and silicon or ge.
The collision pumps the tl atom into the excitation state.
It can then stimulate the atoms to emit radiation in a coordinated manner, resulting in light amplification.
The light is green.
When the system is developed, it can become so powerful that it is difficult to control, says Gole.
Gole and his team have worked out three of the more powerful, continuous light amplifier reactions
Sodium clusters and halogen atoms.
When chlorine is equal to halogen and three-
The result of the atomic sodium cluster is the formation of sodium chloride and an excited two-
Atomic sodium cluster
The new cluster emits light, drops to a lower level of energy, and immediately reacts with any excess chlorine.
Because this response is so rapid, the number of excited sodium clusters is always higher than the number of low sodium clusters
The energy cluster enables the laser to work continuously.
The potential application of chemical power lasers depends not only on the possibility of obtaining high power, but also on the need for simpler optical systems for visible light, and is easier to focus than infrared radiation. Visible-
Light lasers can also be very compact.