Airborne sonar uses lasers and sees underwater. And similar systems can also use as new types of pressure weapons.

"An artist’s rendition of the photoacoustic airborne sonar system operating from a drone to sense and image underwater objects. Credit: Kindea Labs" (ScitechDaily.com/Photoacoustic Airborne Sonar System Combines Light and Sound to See Underwater)

The photoacoustic lasers can be installed in quadcopters, helicopters, and aircraft. Or even in satellites. The photoacoustic laser's laser transmitter can separate from the search platforms. The laser system can be inside the ships or the high-power ASAT- lasers can use as the laser system of that kind of photoacoustic laser. 

Lasers and small quadcopters are the ultimate combinations. The small-size quadcopter can equip with a mirror. And that mirror can use to aim laser rays at the ground target. 

A laser ray will jump from that mirror. And then, the system will aim the laser ray at the wanted position.  But the laser rays can also use as powerful pressure weapons. In that model, the system will shoot water droplets above the target. And then high-power laser rays can explode those water droplets. 

If the system aims lasers or microwaves at the water. That thing creates a bubble in the water. The high-speed vaporization makes pressure waves that can use in airborne sonar systems. But if the power of laser rays is high enough, it creates so powerful pressure wave that can destroy a submarine or ship. This kind of system can make the next generation of killing FAE or pressure weapons possible. 

In airborne sonar, the key element is the technology that combines acoustic devices and lasers. Laser systems make bubbles underwater. And those bubbles send sound waves around the bubble. Then the airborne system can use those soundwaves to detect underwater objects.

That is one version of the next-generation hybrid systems that can revolutionize submarine detection. If the laser ray that hits water has enough power. It can create so powerful pressure or soundwave that it can destroy submarines. The laser-based stun guns can use water droplets that are shot by laser. The speed of vaporization determines the power of pressure impact. 

The combination of the lasers and water can make very powerful sound waves. The laser can aim to water droplets and then the laser system just vaporizes the water droplet. That thing can form powerful sounds or pressure waves. That is one thing that can make next-generation stun devices or even lethal pressure weapons possible. The idea is that the drone will drop water droplets into the air. And then high-power lasers or microwaves will aim at those droplets. 

https://scitechdaily.com/photoacoustic-airborne-sonar-system-combines-light-and-sound-to-see-underwater/amp/

https://www.lockheedmartin.com/en-us/news/features/2019-features/how-laser-weapons-are-changing-the-defense-equation.html

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