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anyone knows simple circuit for boost driver? I d like to use 2.4V DC supply...

How to build driver for laser diode with using only 2 AA batteries suply (as in most common laser pointers) which gives me only 2.4 V (NiMH) or 3V (alcaline batteries) DC ? LM317 works only with >3 V my 650nm laser diode needs 2.1-2.5V and 18-25mA. Thank You

Sorry, I was using Smartphone didnt read thread dates... I just wanted to know, why there are theese 2 resistors in this circuit, thought they could be compensated with used variable resistor, but now I know. Going to buy this laser diode...

excelent tutorial, I will try it :-) just like to ask 2 questions about this circuit... http://laserpointerforums.com/attachments/f42/11711-diy-homemade-laser-diode-driver-lm317_components01_001.jpg 1) why using 2 resistors ? isnt the potentiometer enaught? can I use just potentiometer...

I suggested to use e.g. thermal resistor. (the higher temperature, the lower resistance) and measure it with multimeter how much its resistance get lower. Then need to calculate the temperature (before and after). But dont know how to convert the rise of temperature in certain material the...

Thanks. So LaserBee 2.5 W USB does not measure beam wavelenght, it measures "only" time and output power?

Is it possible to measure Laser output power with Temperature Sensor ? eg. datasheet: http://www.gme.cz/_dokumentace/dokumenty/313/313-909/dsh.313-909.1.pdf I have seen Laserbee LPMs and LPM based on IR thermometer and piece of aluminium foil, but what about to use Temperature sensor and...

Hi, Do I have to set my wavelength manualy or your program will find it and measure it ? eg. if I use DPSS green laser without IR filter, will the program shows me 2 different wavelengths and their powers ? btw. do you plan to produce HLPM II (Calibrated Hobbyist Laser Power Meter Sensor...

Thanks for quick reply... Last question :-) ... whats the wavelength of the IR diode used in green 532nm DPSS ? 780 or higher?

Thank You all for info. btw. (I will use this thread for minor question) What about laser diodes in old PC mechanics ? 1) CD-R/RW 2) DVD-R 3) DVD-R/RW I know that every model is different, but mainly...can be said all of them dont have DPSS system and all of them are red laser diodes without...

hmm... Maybe I should change my question, cos I ve read now more about green lasers and seems that IR produces only IR diode, which is used only in green lasers with crystals to get green wavelength.... this should be the solution. So if I wanna buy red diode, no IR will be producet, wont it...

Hi, where can I read if diode produces IR or any other light I dont want to? Wanna buy Laser diode and Datasheet shows only "red wavelength". Does it mean that no other wavelengths will be produced? look at this datasheet www.gme.cz/_dokumentace/dokumenty/511/511-270/dsh.511-270.1.pdf Thank You.

woow , that is interesting, so that means OD 7+ Thanks

Thanks, now understand OD. Seems that optical density is the most important value and can be shown as #OD or as Transmittance (before log function). But... Is the OD the same for any wavelength from the wavelengths interval on goggles? (eg. top and bottom Values has lower OD - goggles for 300...

Hi, how to choose good goggles? Many sellers tell you only wavelength and price. But is it everything you need to know? if I buy glasses with correct wavelength (eg. I m gona use green lasers 532 nm, need to buy glasses for lasers 370-560 nm), does the power of my laser matter too? Does the...

And what about the quality ? Is it realy 5mW (I dont want 1mW, already have 1-5mW red) ? Do you have WL Core ?

Hi, I am new, can anybody explain me what the laser module is ? Laser module = laser diode + lenses + driver + cooler ? So If you buy laser module, you need just batteries and any (good looking) housing (so you dont need driver, dont need lens) ?

Ok, I will not risk :-) I cant believe why WL is that bad company, they wasted too much money for design (web sites, hosts) and they lost everything on communication (buyer services). OMG. I d like to see their Boss :-) thank You, CNIlasers.com - there are no prices ? Is it possible to order...

I have heard bad reviews for Wicked Lasers (33 reasons why not to buy...), but they has realy good looking lasers... What do you think about their Core 5mW green laser ? (just want <6 mW with IR filter, on DX there are low priced lasers without IR filter...) Is there something bad on WL Core...

Bluefan, Thank You for many answers, realy useful for me... Please anyone... write here Your own experiences with your "eye hits"... Has anyone got hit his eye? Please post here: 1. Laser type (color or/and nm) 2. If you got hit by reflection or got direct hit 3. roughly Time how long it...