Optical Spectroscopy - Optical Spectroscopy Lab Instructor:...

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Optical Spectroscopy Lab Instructor: Xiaoxiao Li October 25, 2007
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Results and Discussions: Flourescent Light Spectrum Using both the handheld optical spectrometer and the research-grade USB spectrometer the following data was collected. A cutoff of 150 counts was used to determine which USB readouts were recorded. λ (nm) Optical Readout Intensity (1-10) Optical Readout λ (nm) USB Readout Intensity (1-10) USB Readout 405 8 404.68 4 436 10 436.66 10 545 9 488.67 10 577 8 544.55 10 579 8 587.20 9 615 10 612.29 10 690 1 631.28 7 651.83 3 708.92 3 Incandescent Lightbulb Spectrum When observing the emission spectrum of the incandescent light with the hand-held spectroscope, a continuous line spectrum could be seen. Using the USB spectrometer there was a continues spectrum as well evident as a rounded graph with a peak around 610 nm Helium Spectrum Using the hand-held spectrometer to observe the helium emission spectrum, the following data was collected. The light appears a salmon color. A cutoff of 150 counts was used to determine recorded wavelengths from the USB readout. λ (nm) Optical Readout λ (nm) USB Readout Intensity (1-10) USB Readout 360 389.54 7 440 435.51 1 465 471.23 4.5 475 493.56 2 495 502.73 6.5 540
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Optical Spectroscopy - Optical Spectroscopy Lab Instructor:...

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