Are we certain only CNI has the ability to make 561nm modules/crystals? The modules lasence has listed look nothing like any of the ones CNI offers and are listed cheaper than the cheapest service I know of that CNI used to offer. They also appear to have more modules listed in the 555nm-561nm range in powers from ~3mW all the way up to class IV from a quick glance through their listings. All of these are listed surprisingly cheap and well below what anything even remotely exotic that comes from CNI. They even have a 50mW (possibly, not in listing but is in the custom spec sheet on the page) of 571nm listed for ~$240 for single quantities. Or 20mW in a 20mm module for just under $500. I'm going to guess they have temp issues and the same NLO is giving them the entire 555-575nm range skewed much more heavily towards 555nm.
DPSS is not included in this thread as DPSS are not direct diode lasers > When and if those Lasence and Opt modules become available there willl no doubt be a thread about them.
There is an entire thread on those low cost low quality self-doubling crystal lasers from Lasence and Opt Lasers which you posted in here:
https://laserpointerforums.com/thre...d-any-power-is-fine-starting-from-1mw.108105/
There is nothing available from either company according to Zraffleticket in the thread above and nobody reports any reply form either company that anything offered on Alibaba is actually available now, presumably they have the same problems with the crystal quality and supply as back 2 years ago.
Remains to be seen if there ever is new production if quality is any good/has improved or if they still have same disadvantages and quality problems with the crystals and the product as back in late 2018 when LPF members were getting a few low cost pieces.
Too good to be true usually is as mentioned before. That Zraffleticket says neither company have any in stock is not a good sign that there actually is any product supply.
Sounds like the same quality, crystal problems, reliability, and production repeatability/new product development problems song as 2 years ago.
Would assume those modules are not a business priority for them as the can make a lot more money a lot quicker/faster on other proven fully developed products with already established strong markets for those products
Would guess nothing is going to change much in the near future. The modules are on a "slow boat", it seems.
Right now CNI is the only reliable maker of traditional high quality DPSS modules in the range of 561 to 589 and 593.5 nm which they have been making since about 2008 and still make for anyone wanting one.
Try emailing them and asking if anything you are interested in is available in either CW or the 50% modulated PWM modules that they list on Alibaba a see what they say.
www.researchgate.net
