Lasercom

Laser communication, or lasercom, is a technology that uses lasers to transmit data over long distances through the air or through space. In the aerospace context, lasercom systems can be used for a variety of purposes, including transmitting data from spacecraft to Earth, transmitting data between spacecraft, and transmitting data between aircraft and ground stations.

Lasercom systems offer several advantages over traditional radio frequency (RF) communication systems, including higher data rates, more secure communication, and the ability to transmit data over longer distances with less interference. Lasercom systems are also much smaller and lighter than RF systems, which makes them attractive for use in spacecraft and aircraft where weight is a critical factor.

Some examples of how lasercom technology has been used or is being developed for use in the aerospace industry include:

• The NASA Lunar Laser Communication Demonstration (LLCD) mission, which used a lasercom system to transmit data from the Moon to Earth at a record-breaking data rate of 622 megabits per second.

• The European Space Agency's (ESA) Laser Communication Terminal (LCT), which is a lasercom system that is being developed for use on future ESA missions to transmit data from spacecraft to Earth.

• The NASA Optical Communications and Sensor Demonstration (OCSD) mission, which is testing the use of lasercom technology for transmitting data between low Earth orbit satellites.

• The NASA Space Laser Communication Relay Demonstration (SLCRD) mission, which is testing the use of lasercom technology for transmitting data between the International Space Station and ground stations on Earth.

• The NASA Laser Communications Relay Demonstration (LCRD) mission, which is testing the use of lasercom technology for transmitting data between aircraft and ground stations on Earth.