Rb Abs. w/ CH 4 Residual Fit Vs. Lorentzian Broadening Coefficient (MHz/Torr) This Work Rotandaro Run 1 Run 2 Run 3 He 18.9±0.2 19.01±8e-005 18.21±3e-005 17.62±5e-005 Ne 9.84±0.1 9.38±5e-005 9.579±5e-005 8.86±7e-005 Shift Coefficient (MHz/Torr) This Work Rotandaro Run 1 Run 2 Run 3 He 4.71±0.04 5.17±8e-005 4.794±3e-005 4.5664±2e-005 Ne -0.90±0.02 -0.8121±2e-005 -0.876±2e-005 -1.054±3e-005 • Diode Pumped Alkali Laser (DPAL) • Air Force Interest in DPAL • Thermal Management • Short Logistics Trail • Apparatus Rb Absorbance with CH 4 Mixing Gas Cold Plates Fit Equations Joseph W. Young*, David A. Hostutler, and Greg A. Pitz *East Mountain High School, Sandia Park, NM Identifying Asymmetry in the Collisionally Broadened D 1 Line of a Rubidium DPAL + − − − − + = ) ) ( ) (( )) ]( [ ] [ ( ) , , , ; ( 2 2 0 0 γ ω ω ω ω ω ω γ ω γ ω s s s fit B Sin B Cos A B A I Shift n Width Lorentzian n n B e lN A s n ≈ = ≈ = = = − 1 1 0 0 0 β ω α γ β π σ α Coefficient B (CH 4 ) Introduction Results Special thanks to Wade Klennert, Donald Stalnaker, and Billy Pike Acknowledgements • Verification of Test Stand Accuracy Conclusion / Future Work Heat Pipe Spectrometer Full Spectrum White Light Source Coefficient A (CH 4 ) Frequency (Hz) Frequency (MHz) Absorbance Absorbance Res