| ??? 09/18/09 20:12 Read: times |
#168973 - OP power Responding to: ???'s previous message |
Like Christoph says, OP power is optical, the input power is probably at least 500mW. You need a current limiting power supply to begin with I suppose, but you really need to build a laser power meter - see if you can find an online design, but I can't readily see how you calibrate it. There is a classic method using a "bolometer" which is an energy meter, which you could energise with a resistor and measure "true" energy to a reasonable enough precision to get your laser running.
50mW in the optical output means your eyes have NO chance of blinking before your retina is destroyed. Please be very careful. |
| Topic | Author | Date |
| Laser adjustment / power calculation / current measuring | 01/01/70 00:00 | |
| Is that 50 mW output power? | 01/01/70 00:00 | |
| OP power | 01/01/70 00:00 | |
| Current Limiter | 01/01/70 00:00 | |
| Try a voltage regulator first ... | 01/01/70 00:00 | |
| Bench Supply Even Easier | 01/01/70 00:00 | |
| If he's got one ... | 01/01/70 00:00 | |
| I've got several... | 01/01/70 00:00 | |
| Have you shipped anything lately? | 01/01/70 00:00 | |
| Far too serious | 01/01/70 00:00 | |
| Well, I was thinking along those lines ... | 01/01/70 00:00 | |
| No bench supply =( | 01/01/70 00:00 | |
| It's hard to work without one | 01/01/70 00:00 | |
| Cant do without a bench supply? | 01/01/70 00:00 | |
| Yes you can! | 01/01/70 00:00 | |
| Make one.. | 01/01/70 00:00 | |
| That's an important feature | 01/01/70 00:00 | |
Power supply should be the FIRST project! | 01/01/70 00:00 |