University of Bath
Dept. of Physics
| |
Local rules for the safe use of
lasers are here.
| Wavelength, Å |
Frequency, cm-1 |
Power, relative |
Energy, eV |
| 5145 |
19440 |
1400 |
2.409 |
| 5017 |
19930 |
250 |
2.471 |
| 4965 |
20140 |
400 |
2.496 |
| 4880 |
20490 |
1300 |
2.540 |
| 4765 |
20990 |
500 |
2.601 |
| 4727 |
21160 |
150 |
2.622 |
| 4658 |
21470 |
100 |
2.661 |
| 4579 |
21840 |
250 |
2.707 |
| 4545 |
22010 |
100 |
2.723 |
| 3511, 3638 |
28480, 27490 |
20 |
3.529, 3.407 |
| 4420 |
22624 |
150 |
2.805 |
| 3250 |
30769 |
30 |
3.815 |
Coherent 599 optics
|
Dyes
|
Pump
(dye
laser)
|
Peak
(nm)
|
Range
(nm)
|
Recipe
|
|
Stilbene
1
|
All
lines UV (C599a)
|
425
|
(401-437)[a]
|
predissolve
2g in 200ml EG + 700ml EG
|
|
Stilbene
3
|
All
lines UV (C599a)
|
435
|
411-468[b]
|
predissolve
1g in 50ml BA + 1.21ml EG
|
|
Coumarin
102
(mix
of C480 & C450)
|
All
lines UV (C599a)
|
475
|
465-499
|
predissolve
1g C480 & 1g C450 in 300ml BA completely disolve in ultrasonic bath,
700ml EG
|
|
Pyrromethene
556
|
488nm
(S375)
|
546
|
(531[c]-585)[d]
|
2g in
1 litre EG
|
|
Rhodamine
110
|
All
lines visible (S375)
|
565
|
545-590
|
predissolve
0.75g in MeOH + 950 ml EG
|
|
Rhodamine
6G
|
All
lines visible (S375)
|
595
|
575-633
|
1g
per litre EG, predissolved in MeOH
|
|
DCM
|
All
lines visible (S375)
|
640
|
615-680
|
0.5g
per litre EG, predissolved in MeOH
|
Table 2.1 Details of dyes. Optics according to manuals unless otherwise stated: [a] with
S3 optics; [b] with C102 output coupler; [c] with C102 output coupler externally
mounted; [d] R110 optics. EG(ethylene
glycol); BA(benzyl alcohol); MeOH (methanol).
 | Black one: newer, more efficient crystal. Always preferred but not yet
motorised. |
| White one: older, less efficient crystal. Motorised. |
| Optics identical:
 | Short band 700-800nm |
| Middle band 800-900nm |
| Long band 900-1000nm |
| These can be mixed to obtain wavelengths at boundaries (use the output
coupler first) |
|
|
