Lab 4 Laser - Institutt for elektronikk og telekommunikasjon - NTNU
Lab 4 Laser - Institutt for elektronikk og telekommunikasjon - NTNU
Lab 4 Laser - Institutt for elektronikk og telekommunikasjon - NTNU
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Appendix A<br />
Output spectrum<br />
Figure A.1a shows the output spectrum of the HeNe laser. Figure A.1b shows<br />
the spectrum of the gas glow. Notice the broad spectrum and the many<br />
lines emitted. It is possible to get the the fluorescent tube lasing at both<br />
green, yellow and orange wavelengths. A blue laser may also be possible!!<br />
2500<br />
2000<br />
Effect [arb. units]<br />
1500<br />
1000<br />
500<br />
0<br />
630 635 640 645 650<br />
[nm]<br />
Figure A.1a: <strong>Laser</strong> output<br />
1200<br />
1000<br />
800<br />
Effect [arb. units]<br />
600<br />
400<br />
200<br />
0<br />
−200<br />
100 200 300 400 500 600 700 800 900<br />
[nm]<br />
Figure A.1b: Output spectrum from the gas glow outside of tube<br />
12
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