Best laser equipment for marking bases in an outdoor game?

[energylight14]

Hello!
I am planning on creating an outdoor game where bases of both teams would be marked using lasers that are pointing up in the sky. So, the laser beam should be very visible from all directions. The game would happen during night time.
I would like to know what equipment (laser diodes, drivers, heatsinks etc.) would be the best for this application for the best price.
So, the laser beam should be as visible as possible when it is pointing up in the sky, it has to run for a long time and has to be inexpensive. Perfect if there would be 2 different wavelengths, so each team would have a different color.
Any suggestions?

 

[ManCave]

Hello.
I would strongly advise you to check your local laws regarding lasers.
When it comes to pointing lasers at the sky, Most countries will have forbidden zones like x amounts of mile/kilometres from airfields, airports, hospitals and such.
Also, eye safety for your players should be number one concern.
I’m sure others will chip in with what lasers are best suited.
Meantime, an introduction post in the forum welcome section is always appreciated.
Cheers!

 

[Encap]

What Country are you in?
Since you apparently have no idea of the reality of what you are proposing to create with regard to the capabilities and requirements of lasers in the real world:

On the face of it the daydream world game equipment sounds like just that, a daydream not possible practically or legally to do in the real world for several reasons.
Other than using lasers of whatever output power in your own home for entertainment purposes where all the liability and responsibility for whatever happens is on your shoulders, what you want to do probably is not going to be legally or "cheaply" possible.

5 mW is the legal maximum output for laser and laser projectors or entertainment devices of any kind in USA without a "Variance" for both the equipment and the use from the US FDA.

532nm green is the brightest visually.
Suggest you buy a 5mW 532nm laser and see if it works in the real world for what you want to do/accomplish.

You have not defined enough parameter details for anyone to guess what might work even if legally prohibited/illegal and irresponsibly/recklessly used, and dangerous. ---example: "visible" to whom? Under what conditions/ from how far away? Example--cheap---what does that mean to you by chaep $10, $100, $1000?

Within the USA-- the "game" equipment would have to comply/ be in compliance with all US FDA laser laws, rules, and regulations if used outdoors, pointing in the sky in open airspace, and/or exposing people to "laser beams".

Have a look at his web site here: https://www.laserpointersafety.com/rules-general/rules-outdoor/rules-outdoor.html and also see: https://www.laserpointersafety.com/rules-general/uslaws/uslaws.html

From and have a look at: https://www.fda.gov/radiation-emitt...-and-entertainment-products/laser-light-shows
"Laser projectors and laser light shows are “demonstration laser products” as defined by 21 CFR 1040.10(b)(13):
“Demonstration laser product means a laser product manufactured, designed, intended, or promoted for purposes of demonstration, entertainment, advertising display, or artistic composition.”
"Lasers promoted for entertainment purposes or amusement also meet FDA’s definition for “demonstration laser products.”
"Laser products promoted for demonstration purposes are limited to hazard Class IIIa by FDA regulation 21 CFR 1040.11(c). This means that projectors are limited to 5 milliwatts output power in the visible wavelength range from 400 to 710 nanometers. There are also limits for any invisible wavelengths and for short pulses. Laser light show projectors therefore may not exceed the accessible emission limits of CDRH Class IIIa. Laser light show manufacturers must submit a variance request for FDA approval in order to sell and operate higher class (Class IIIb and IV) laser light show equipment."

 

[Cyparagon]

Personally, I consider most "sky pointing" okay, provided it is for short durations, and provided the device is supervised at all time. This does not appear to be the application you have in mind.

Legality aside, you're going to attract attention from outsiders. Sooner or later, you will attract the wrong kind of attention. Someone will either peer into the beam, abscond with your device, call the police (even if only out of fear/suspicion), generally hassle you, or myriad other possibilities.