When I first heard about Lasencee yellow lasers, I really regretted not having the money when they were on sale. Years later, such an opportunity arose for me again.
I noticed that pre-made "571nm" laser were appearing on auctions at much lower prices than the bare Lasencee modules. I didn't know what I was buying, but I took a chance, just like I did with the famous 591nm models. I chose a familiar seller, and three weeks later, a crumpled, weathered box arrived. Inside, I found another - luckily intact- box and a small bonus: a small, USB charger from Q-line, which I truly appreciated.

Inside the larger box was the mysterious "yellow laser."

The first thing that surprised me was the size. It's smaller than the standard model and powered by an 18350 battery. Its length is only 117mm.

It's surprisingly well-made. The anodizing is very nice and pleasant to the touch. There are no sharp edges, everything is polished. It has a complete set of gaskets.

After unscrewing the head, I discover a module coated with thermally conductive silicone paste, secured with an Allen screw.

The head has a glass window (probably covered with a filter). I believe this is to protect the module from moisture.

To power the laser, I used a protected 18350 battery from Keepower, with a capacity of 1200mAh, and high discharge current. I've been using them successfully in more powerful lasers for five years, and they work well for me.
The moment of truth. I turn it on and... nothing. Very surprised, I check the polarity and... still nothing.
After a while, I realized, that this laser simply has a VEEERY long soft start. It takes an insane ~2seconds to start lasing and another 2-3 seconds to fully operate, which bothers me a bit.
The color is bright, unique, and definitely classifiable as yellow!
I tested several cameras, but unfortunately, they all see it as green. I retouched the color in app, to make it as close to what I see as possible:

Unfortunately for me, it's still not the perfect canary yellow, as it has a hint of green. Depending on the surface, it's more like a yellow olive or an almost-ripe lemon.

Several other people have told me the same thing. However, I have the impression that, depending on the laser temperature, the color leans more toward yellow-green or intense yellow. Unfortunately, I don't have a spectroscope to confirm this or check how close to 571nm my laser shines.
It was time to measure the power. My LPM is a cheap, well-known meter from LPS, but in the limited NANO version powered by USB port (and I love it).
The results I saw after a moment were a whopping 30mW! However, after a ~minute, the result was even higher, and I was more than happy:

With tax and shipping, the total cost was $87. Considering that the "cheap 591nm" (593,5nm) cost twice as much on the day of its release, I'm very happy with it.
Seller Link: ebay.com/itm/326657488485?var=515691340409
I noticed that pre-made "571nm" laser were appearing on auctions at much lower prices than the bare Lasencee modules. I didn't know what I was buying, but I took a chance, just like I did with the famous 591nm models. I chose a familiar seller, and three weeks later, a crumpled, weathered box arrived. Inside, I found another - luckily intact- box and a small bonus: a small, USB charger from Q-line, which I truly appreciated.

Inside the larger box was the mysterious "yellow laser."

The first thing that surprised me was the size. It's smaller than the standard model and powered by an 18350 battery. Its length is only 117mm.

It's surprisingly well-made. The anodizing is very nice and pleasant to the touch. There are no sharp edges, everything is polished. It has a complete set of gaskets.

After unscrewing the head, I discover a module coated with thermally conductive silicone paste, secured with an Allen screw.

The head has a glass window (probably covered with a filter). I believe this is to protect the module from moisture.

To power the laser, I used a protected 18350 battery from Keepower, with a capacity of 1200mAh, and high discharge current. I've been using them successfully in more powerful lasers for five years, and they work well for me.
The moment of truth. I turn it on and... nothing. Very surprised, I check the polarity and... still nothing.
After a while, I realized, that this laser simply has a VEEERY long soft start. It takes an insane ~2seconds to start lasing and another 2-3 seconds to fully operate, which bothers me a bit.
The color is bright, unique, and definitely classifiable as yellow!
I tested several cameras, but unfortunately, they all see it as green. I retouched the color in app, to make it as close to what I see as possible:

Unfortunately for me, it's still not the perfect canary yellow, as it has a hint of green. Depending on the surface, it's more like a yellow olive or an almost-ripe lemon.


Several other people have told me the same thing. However, I have the impression that, depending on the laser temperature, the color leans more toward yellow-green or intense yellow. Unfortunately, I don't have a spectroscope to confirm this or check how close to 571nm my laser shines.
It was time to measure the power. My LPM is a cheap, well-known meter from LPS, but in the limited NANO version powered by USB port (and I love it).
The results I saw after a moment were a whopping 30mW! However, after a ~minute, the result was even higher, and I was more than happy:

With tax and shipping, the total cost was $87. Considering that the "cheap 591nm" (593,5nm) cost twice as much on the day of its release, I'm very happy with it.
Seller Link: ebay.com/itm/326657488485?var=515691340409
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