Space-qualified laser system for the BepiColombo Laser Altimeter

Area of Science:

• Space Science
• Laser Technology
• Planetary Science

Background:

• Developing robust laser systems for deep space missions is critical for remote sensing.
• Miniaturization and space-qualification are key challenges for instruments on long-duration spaceflights.

Purpose of the Study:

• To present the design of a space-qualified miniaturized laser for pulsed operation.
• To detail the laser's specifications and its intended application in Mercury's topographic mapping.

Main Methods:

• The laser system utilizes a pair of diode-laser pumped, actively Q-switched Nd:YAG rod oscillators.
• Components are hermetically sealed and encapsulated in dry synthetic air for space environment protection.

Main Results:

• The laser operates at a 1064 nm wavelength with repetition rates up to 10 Hz.
• It delivers over 300 million pulses, each with 50 mJ energy and a 5 ns pulse width (FWHM).

Conclusions:

• The designed laser is suitable for deployment on the European Space Agency's Mercury Planetary Orbiter.
• It will contribute to recording crucial topographic data of Mercury's surface after a 6-year cruise.