20 replies to this topic

[antennaboy]

hello Forum,
what is the best type of photodetector for collecting laser energy from a transmitting laser?

Does it depend on the wavelength? No modulation involved. Resposivity, sensitivity are important parameters, right?

I know there are many types of detectors...

thanks,
antennaboy

[cvbcbcmv]

I think you're over thinking this.

It's called an LPM, that's it. Google it and find some good ones like laserbees.

[jhawins]

cvbcbcmv, on 13 February 2012 - 08:49 PM, said:

I think you're over thinking this.

It's called an LPM, that's it. Google it and find some good ones like laserbees.

No that's not what he's doing at all... He wants to do something like transmit a song over a laser and needs something to receive the signal. Not measure the power.

[joelslasers]

antennaboy, on 13 February 2012 - 06:14 PM, said:

hello Forum,
what is the best type of photodetector for collecting laser energy from a transmitting laser?

Does it depend on the wavelength? No modulation involved. Resposivity, sensitivity are important parameters, right?

I know there are many types of detectors...

thanks,
antennaboy

i actually used a small solar panel from radioshack (its small) to transmit a song over distanves and it worked very well!!!!

[cvbcbcmv]

Oh, sorry I misunderstood the question.

[Living_Laser]

Wouldnt this be nice in Entertainement Lasers? Doesnt matter, Radio Shack has most of your DIY needs.
Ba bah bahhh ba bahhhhh, Gotta Love it.

[The_LED_Museum]

When I was living at the Juneau Receiving Home in the late-1970s, I used the amplifier from a "piano key"-type cassette recorder and a garden-variety solar cell (something I very probably picked up at either Radio Shack or Juneau Electronics), wired where the tape head was (the amplifier's low-impedance input). This combination produced a good, light-sensitive AF amp. I could very easily detect the 60Hz "hum" even from incandescent light bulbs, and a hissy, slightly crackly sound when the solar cell was directed toward the type G2 star in our planetary system (AKA. the Sun) .

So for AF applications, I'd still go for a small audio amplifier and a solar cell,

[LaserPwnter99]

fiber optic cable <---------------------------------- my guess dont take my work for it

[jhawins]

LaserPwnter99, on 14 February 2012 - 03:19 PM, said:

fiber optic cable <---------------------------------- my guess dont take my work for it

Wow.... Just wow... That wouldn't convert the lasers light to anything it would just transmit it.. Wow i... It's.. Words cannot describe this..

[LaserPwnter99]

jhawins, on 14 February 2012 - 06:04 PM, said:

Wow.... Just wow... That wouldn't convert the lasers light to anything it would just transmit it.. Wow i... It's.. Words cannot describe this..

Wow.... just wow... I never said it was the right awsner. I didnt want to read the whole thing because it was too complicated. so i said something.. wow I... it's... words can not describe your reply...wait maybe one, unnecesary.

[CollinstheClown]

Unnecesary would describe your initial suggestion. If you don't know the answer, don't say anything.

[jhawins]

LaserPwnter99, on 14 February 2012 - 08:49 PM, said:

Wow.... just wow... I never said it was the right awsner. I didnt want to read the whole thing because it was too complicated. so i said something.. wow I... it's... words can not describe your reply...wait maybe one, unnecesary.

LP there is a good reason you were banned. Any respect you could have possibly worked back up from us, me specifically, Is gone.
I'm not perfect by any means. But you coming back here and breaking the rules to be here shows extreme immaturity. I was IP banned at one time, you know what I did? I made another account ONLY to PM JT and T and find out what was goin on. I did not post. I did not contact anyone else. I asked what I did, I apologized. My bannishment was lifted. To function here you need to act like an adult, take responsibility for your actions, and accept the consequences.

[cvbcbcmv]

jhawins, on 15 February 2012 - 12:23 AM, said:

LP there is a good reason you were banned. Any respect you could have possibly worked back up from us, me specifically, Is gone.
I'm not perfect by any means. But you coming back here and breaking the rules to be here shows extreme immaturity. I was IP banned at one time, you know what I did? I made another account ONLY to PM JT and T and find out what was goin on. I did not post. I did not contact anyone else. I asked what I did, I apologized. My bannishment was lifted. To function here you need to act like an adult, take responsibility for your actions, and accept the consequences.

The fact LP is still here is just unacceptable. I'm outraged. I'm literally soooo mad.

Also, with all do respect, stop calling it an IP ban like it is a worse punishment. Like I said before, it is now standard (or at least was, when this forum was really moderated) to but an IP ban permanently if it was a ban or temporarily if it was a suspension. Normally when we ban a user we didn't have to worry about them not finding out because we literally physically must let the user know, IP Board makes us. We have options of email and PM, obviously we choose email as they are banned, but the email system wasn't working, it started working when we all got those tons of emails. Now it's not a problem. But back to what I was saying, we give them an IP ban so that they don't create another account and start posting, like someone we know...

Also, if you guys are wondering what ever happened to laserchick, HE lived in Texas first of all and had a previous account which he stopped using and created this new "laserchick" account. I sent him several PM's asking him what's up with this and gave it time because it still said it was not yet read. When he finally did read them he was making posts, looking at other PM's, he then looked at mine and quickly went offline without responding, so I pulled the trigger.

I also was so careful about people not coming back that every time a new member showed up I searched their IP in the admin CP with the option that tells you everything about that IP. (member wise) to see if it is a previous member. I spent a lot of time making this forum as good as I could get it. That hasn't been acknowledged slightly since July though.

[LaserJones]

cvbcbcmv, on 07 February 2012 - 11:56 AM, said:

We're keeping quiet but we're all kind of sitting here like:

Finding your lack of authority most inconvenient? How many many of you dose it take to bully one 12 year old. If Joe N wanted him gone, LP would be gone.

[jhawins]

LaserJones, on 16 February 2012 - 10:00 PM, said:

Finding your lack of authority most inconvenient? How many many of you dose it take to bully one 12 year old. If Joe N wanted him gone, LP would be gone.

I have no idea why you quoted a completely irrelevant post of his.

Joe hasn't enforced any rule really, it's slightly embarrassing. Honestly I hve lost a little respect.

[LaserJones]

jhawins, on 17 February 2012 - 04:03 AM, said:

I was not talking to you.

[jhawins]

LaserJones, on 17 February 2012 - 04:44 AM, said:

I was not talking to you.

Honestly it's childish. It shows a huge lack of maturity especially since we all know your age. Please stop and we'll put this behind us.

[LaserJones]

I would like to apologies for comparing jhawins to a braying ass, that was unkind, and I hope the braying ass will forgive me. JK. The JK is to absolve me of responsibility for my actions and put blame on jhawins for not having a sense of humor. I could have said it was a joke or many other lame things with the same intent. Cant you take a joke?

[jhawins]

LaserJones, on 22 February 2012 - 12:48 AM, said:

I would like to apologies for comparing jhawins to a braying ass, that was unkind, and I hope the braying ass will forgive me. JK. The JK is to absolve me of responsibility for my actions and put blame on jhawins for not having a sense of humor. I could have said it was a joke or many other lame things with the same intent. Cant you take a joke?

Wow.

[DrFehr]