OPALS is a technology demonstration aboard the International Space Station designed to test the use of focused laser energy for space communications.

Although optical communications systems reduce size, weight, and power requirements, the entire Laser Communications Relay Demonstration (LCRD) payload is actually the size of a standard king-sized mattress!

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As science instruments evolve to capture high-definition data like 4K video, missions will need expedited ways to transmit information to Earth. With laser communications, NASA can significantly accelerate the data transfer process and empower more discoveries. Optical, or laser, communications will enable 10 to 100 times more data transmitted back to Earth than current radio frequency systems.

Since the beginning of spaceflight in the 1950s, NASA missions have leveraged radio frequency communications to send data to and from space. Optical communications, also known as laser communications, will further empower missions with unprecedented data capabilities.

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The DSOC package will be aboard NASA's Psyche mission and utilizes photons to transmit more data in a given amount of time.

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Optical communications systems are ideal for missions because they need less volume, weight, and power. Less mass means more room for science instruments, and less power means less of a drain of spacecraft power systems.

Launched on December 7, 2021, the Laser Communications Relay Demonstration (LCRD) aims to showcase the unique capabilities of optical communications.

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

Both radio waves and infrared light are electromagnetic radiation with wavelengths at different points on the electromagnetic spectrum.

OCSD, consisting of three CubeSats launched in 2017, conducted the first-ever high-speed laser communications downlink from a CubeSat to a ground station.

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O2O will leverage laser communications on the Orion spacecraft, enabling live, ultra-high-definition video feeds between astronauts and Earth.

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NASA’s Laser Communications Relay Demonstration (LCRD) is demonstrating NASA's first two-way laser relay communications system, sending and receiving data over invisible infrared lasers from its location in geosynchronous orbit with ground stations in California and Hawaii.

NASA uses lasers to send information to and from Earth, employing invisible beams to traverse the skies, sending terabytes of…

Optical communications will provide significant benefits for missions, including bandwidth increases of 10 to 100 times more than radio frequency systems.

From October 2013 through April 2014, LLCD demonstration laser communications during the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission.

The infrared light used for laser communications differs from radio waves because the infrared light packs the data into significantly tighter waves, meaning ground stations can receive more data at once. While laser communications aren’t necessarily faster, more data can be transmitted in one downlink.

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The critical move to optical communications will provide numerous benefits to NASA’s user missions. For all its benefits, optical communications still faces several challenges.

It would take roughly nine weeks to transmit a complete map of Mars back to Earth with current radio frequency systems. With lasers, it would take about nine days.