added couple papers from our lab

1 files changed, 33 insertions, 0 deletions

diff --git a/bibliography.bib b/bibliography.bib
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--- a/bibliography.bib
+++ b/bibliography.bib
@@ -4970,3 +4970,36 @@ Keywords-Plus = {QUANTUM PROJECTION NOISE; SQUEEZED-LIGHT; ENSEMBLE; STATES}
   url = {https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=91091}
 }
 
+@article{mikhailov2009AJP_clock_for_undergrads,
+	author = {Nathan Belcher and Eugeniy E. Mikhailov and Irina Novikova},
+	collaboration = {},
+	title = {Atomic clocks and coherent population trapping: Experiments for undergraduate laboratories},
+	publisher = {AAPT},
+	year = {2009},
+	journal = {American Journal of Physics},
+	volume = {77},
+	number = {11},
+	pages = {988-998},
+	keywords = {atomic clocks; ground states; hyperfine structure; light coherence; magnetometers; microwave oscillators; physics education; population inversion; radiation pressure; rubidium; self-induced transparency; semiconductor lasers; student experiments},
+	url = {http://link.aip.org/link/?AJP/77/988/1},
+	doi = {10.1119/1.3120262},
+	abstract = {We demonstrate how to construct and operate a simple and affordable apparatus for producing coherent effects in atomic vapor and for investigating their applications in time-keeping and magnetometry. The apparatus consists of a vertical cavity surface emitting diode laser directly current-modulated using a tunable microwave oscillator to produce multiple optical fields needed for the observation of coherent population trapping. This effect allows very accurate measurement of the transition frequency between two ground state hyperfine sublevels, which can be used to construct a coherent population trapping-based atomic clock.}
+}
+
+@article{mikhailov2010JOSAB_linparlin_clock,
+	author = {Eugeniy E. Mikhailov and Travis Horrom and Nathan Belcher and Irina Novikova}, 
+	journal = {J. Opt. Soc. Am. B}, 
+	keywords = {Coherent optical effects; Line shapes and shifts; Coherent optical effects},
+	number = {3}, 
+	pages = {417--422}, 
+	publisher = {OSA},
+	title = {Performance of a prototype atomic clock based on lin{\textbardbl}lin coherent population trapping resonances in Rb atomic vapor}, 
+	volume = {27}, 
+	month = {Mar},
+	year = {2010},
+	url = {http://josab.osa.org/abstract.cfm?URI=josab-27-3-417},
+	doi = {10.1364/JOSAB.27.000417},
+	abstract = {We report on the performance of the first table-top prototype atomic clock based on coherent population trapping (CPT) resonances with parallel linearly polarized optical fields (lin{\textbardbl}lin configuration). Our apparatus uses a vertical-cavity surface-emitting laser (VCSEL) tuned to the D1 line of 87Rb with the current modulation at the 87Rb hyperfine frequency. We demonstrate cancellation of the first-order light shift by the proper choice of rf modulation power and further improve our prototype clock stability by optimizing the parameters of the microwave lock loop. Operating in these optimal conditions, we measured a short-term fractional frequency stability (Allan deviation) 2{\texttimes}10{\textminus}11$\tau${\textminus}1/2 for observation times 1 s $\leq$ $\tau$ $\leq$ 20 s. This value is limited by large VCSEL phase noise and environmental temperature fluctuation. Further improvements in frequency stability should be possible with an apparatus designed as a dedicated lin{\textbardbl}lin CPT resonance clock with environmental impacts minimized.},
+}
+
+