I fixed the temperature control of the oven for the PSL doubling crystal.
The PID settings were not good, and also, TC200 was beging DETUNED. So, I activated TUNE function and adjusted PID settings.
I'm not sure what the DETUNE function is for. The manual can be found here;
http://www.thorlabs.com/thorproduct.cfm?partnumber=TC200
Current settings for Thorlabs TC200 are (Red ones are what I changed from the previous setting);
| parameters |
Xend |
Yend |
PSL |
| TEMP SET (deg C) |
37.5 |
35.7 |
36.9 |
| P |
250 |
250 |
250 |
| I |
60 |
60 |
200 (was 117) |
| D |
25 |
25 |
40 (was 19) |
| (DE)TUNE on? |
TUNE |
TUNE |
TUNE (was DETUNE) |
| TMAX (deg C) |
200 |
200 |
170 |
| PMAX (Watts) |
18 |
18 |
18 |
| temperature sensor |
PTC100 |
PTC100 |
PTC100 |
|