Laser frequency combs for precision astrophysical spectroscopy
Searches for extrasolar planets using the periodic Doppler shift of stellar spectral lines resulting from the motion of the host star around the barycentre of an extrasolar system have recently achieved a precision of 60 cm/s. To find a 1-Earth-mass planet in an Earth-like orbit, a precision of 5 cm...
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| creator | Chih-Hao Li Benedick, A.J. Cramer, C.E. Guoqing Chang Li-Jin Chen Fendel, P. Furesz, G. Glenday, A.G. Kaertner, F.X. Phillips, D.F. Sasselov, D. Szentgyorgyi, A. Walsworth, R.L. |
| description | Searches for extrasolar planets using the periodic Doppler shift of stellar spectral lines resulting from the motion of the host star around the barycentre of an extrasolar system have recently achieved a precision of 60 cm/s. To find a 1-Earth-mass planet in an Earth-like orbit, a precision of 5 cm/s is necessary. The sensitivity of astrophysical spectroscopy is presently limited by its wavelength calibration sources. The combination of a laser frequency comb with a Fabry-Perot (FP) filter cavity has been suggested as a promising approach to improved sensitivity. The paper reports on the fabrication and tests of a filtered comb with up to 40-GHz (~ 1 Aring) line spacing, generated from a 1 - GHz repetition-rate source, without compromising long-term stability, reproducibility or spectral resolution. This astro-comb is well matched to the resolving power of high-resolution astrophysical spectrographs. The astro-comb should allow a precision as high as 1 cm/s in astronomical radial velocity measurements. |
| doi_str_mv | 10.1109/CLEOE-EQEC.2009.5192763 |
| format | Conference Proceeding |
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To find a 1-Earth-mass planet in an Earth-like orbit, a precision of 5 cm/s is necessary. The sensitivity of astrophysical spectroscopy is presently limited by its wavelength calibration sources. The combination of a laser frequency comb with a Fabry-Perot (FP) filter cavity has been suggested as a promising approach to improved sensitivity. The paper reports on the fabrication and tests of a filtered comb with up to 40-GHz (~ 1 Aring) line spacing, generated from a 1 - GHz repetition-rate source, without compromising long-term stability, reproducibility or spectral resolution. This astro-comb is well matched to the resolving power of high-resolution astrophysical spectrographs. The astro-comb should allow a precision as high as 1 cm/s in astronomical radial velocity measurements.</description><subject>Calibration</subject><subject>Doppler shift</subject><subject>Extrasolar planet</subject><subject>Fabry-Perot</subject><subject>Filters</subject><subject>Frequency</subject><subject>Optical device fabrication</subject><subject>Planetary orbits</subject><subject>Spectroscopy</subject><subject>Stellar motion</subject><isbn>1424440793</isbn><isbn>9781424440795</isbn><isbn>9781424440801</isbn><isbn>1424440807</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2009</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj81KxDAUhSMyoDP2CVyYF-h4k5s2yUaQUn-gMAi6HpLbFAMz05room_viF0dPjjfgcPYnYCtEGDvm67dtWX71jZbCWC3lbBS13jBCquNUFIpBQbEJVsvoC2u2Pqva0EgqitW5Bw9KIlSa6yv2UPnckh8SOHrJ5xo5jQefebDmPiUAsUcxxN3-TuN0-ecI7kDz1OgM2cap_mGrQZ3yKFYcsM-ntr35qXsds-vzWNXRgkWyxoliMrb3lgAkk4IQ1TVYI13SKbyuidrBKghGEsKRS2979Fr0xtzFnDDbv93YwhhP6V4dGneL__xF5YKTac</recordid><startdate>2009</startdate><enddate>2009</enddate><creator>Chih-Hao Li</creator><creator>Benedick, A.J.</creator><creator>Cramer, C.E.</creator><creator>Guoqing Chang</creator><creator>Li-Jin Chen</creator><creator>Fendel, P.</creator><creator>Furesz, G.</creator><creator>Glenday, A.G.</creator><creator>Kaertner, F.X.</creator><creator>Phillips, D.F.</creator><creator>Sasselov, D.</creator><creator>Szentgyorgyi, A.</creator><creator>Walsworth, R.L.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>2009</creationdate><title>Laser frequency combs for precision astrophysical spectroscopy</title><author>Chih-Hao Li ; Benedick, A.J. ; Cramer, C.E. ; Guoqing Chang ; Li-Jin Chen ; Fendel, P. ; Furesz, G. ; Glenday, A.G. ; Kaertner, F.X. ; Phillips, D.F. ; Sasselov, D. ; Szentgyorgyi, A. ; Walsworth, R.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2093-632015b9d8900c2a118cc56098ba3c85b7dc98104fe89c43162bbd3b78d880c23</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Calibration</topic><topic>Doppler shift</topic><topic>Extrasolar planet</topic><topic>Fabry-Perot</topic><topic>Filters</topic><topic>Frequency</topic><topic>Optical device fabrication</topic><topic>Planetary orbits</topic><topic>Spectroscopy</topic><topic>Stellar motion</topic><toplevel>online_resources</toplevel><creatorcontrib>Chih-Hao Li</creatorcontrib><creatorcontrib>Benedick, A.J.</creatorcontrib><creatorcontrib>Cramer, C.E.</creatorcontrib><creatorcontrib>Guoqing Chang</creatorcontrib><creatorcontrib>Li-Jin Chen</creatorcontrib><creatorcontrib>Fendel, P.</creatorcontrib><creatorcontrib>Furesz, G.</creatorcontrib><creatorcontrib>Glenday, A.G.</creatorcontrib><creatorcontrib>Kaertner, F.X.</creatorcontrib><creatorcontrib>Phillips, D.F.</creatorcontrib><creatorcontrib>Sasselov, D.</creatorcontrib><creatorcontrib>Szentgyorgyi, A.</creatorcontrib><creatorcontrib>Walsworth, R.L.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chih-Hao Li</au><au>Benedick, A.J.</au><au>Cramer, C.E.</au><au>Guoqing Chang</au><au>Li-Jin Chen</au><au>Fendel, P.</au><au>Furesz, G.</au><au>Glenday, A.G.</au><au>Kaertner, F.X.</au><au>Phillips, D.F.</au><au>Sasselov, D.</au><au>Szentgyorgyi, A.</au><au>Walsworth, R.L.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Laser frequency combs for precision astrophysical spectroscopy</atitle><btitle>CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference</btitle><stitle>CLEOE-EQEC</stitle><date>2009</date><risdate>2009</risdate><spage>1</spage><epage>1</epage><pages>1-1</pages><isbn>1424440793</isbn><isbn>9781424440795</isbn><eisbn>9781424440801</eisbn><eisbn>1424440807</eisbn><abstract>Searches for extrasolar planets using the periodic Doppler shift of stellar spectral lines resulting from the motion of the host star around the barycentre of an extrasolar system have recently achieved a precision of 60 cm/s. To find a 1-Earth-mass planet in an Earth-like orbit, a precision of 5 cm/s is necessary. The sensitivity of astrophysical spectroscopy is presently limited by its wavelength calibration sources. The combination of a laser frequency comb with a Fabry-Perot (FP) filter cavity has been suggested as a promising approach to improved sensitivity. The paper reports on the fabrication and tests of a filtered comb with up to 40-GHz (~ 1 Aring) line spacing, generated from a 1 - GHz repetition-rate source, without compromising long-term stability, reproducibility or spectral resolution. This astro-comb is well matched to the resolving power of high-resolution astrophysical spectrographs. The astro-comb should allow a precision as high as 1 cm/s in astronomical radial velocity measurements.</abstract><pub>IEEE</pub><doi>10.1109/CLEOE-EQEC.2009.5192763</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISBN: 1424440793 |
| ispartof | CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009, p.1-1 |
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| language | eng |
| recordid | cdi_ieee_primary_5192763 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Calibration Doppler shift Extrasolar planet Fabry-Perot Filters Frequency Optical device fabrication Planetary orbits Spectroscopy Stellar motion |
| title | Laser frequency combs for precision astrophysical spectroscopy |
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