U.S. Developed and New Polarized Lasers

A few days ago, the University of Michigan has developed a stimulated scattering polarized optical amplifier (LASSP), which can be used as an alternative to existing lasers and can reduce energy consumption by 1,000 times.

Using the polarization effect, some photons interact with the working substance to produce a continuous beam. Researchers predict that LASSP can be used in any field of laser applications today, such as optical communications and laser surgery. At present, LASSP can only work in low temperature environment, but developers are looking to develop LASSP that can work in room temperature environment. The researchers obtained polarization by electrically exciting a gallium arsenide semiconductor sample in a microcavity. The polarization energy was rapidly transmitted to the photon and rapidly attenuated, and based on its initial polarization performance, it escaped as a monochromatic light beam from the microcavity.

Patchaia is a renowned professor of electrical engineering and computer science and a leader of the LASSP team. Patchaia said: "We reported on the first electro-active polarized laser. Since the device was proposed in 1996, researchers all over the world have been working on this research. Now this research is no longer a miracle of the scientific community. , And to develop into a real device." Patchaia LASSP can be expected as a microchip for computers to achieve on-chip and inter-chip optical communications. He added: "Our success is based on two new studies. First, we have enhanced electron polarization scattering to enhance relaxation polarization to ensure ground state continuity. Second, we use magnetic fields to inject bias current into more current-carrying currents. Son to meet the polarization laser emission conditions.