====== Steffen Sauer ======
===== Lasertreiber =====

  * [[.:Laserdriver_Mg|Laserdriver_Mg]]
  * Leiterplatten: https://www.multi-circuit-boards.eu/index.html
    * Login-Nummer: 162258 
  * 10 MHz Mail: 10mhz@iqo.uni-hannover.de
    * passwort: pAd98Y24
  * Grafana: http://thingol:3000/d/63RLCU1Mz/influx?from=1608117070423&orgId=1&to=1608203470423
    * Benutzername: admin
    * Passwort: ramsey

  * [[.:Metamirror|Metamirror]]
===== Paper Sammlung =====

==== General ====
  * {{ :groups:mg:nphoton.2010.313.pdf |Making optical atomic clocks more stable with 10−16-level laser stabilization}}, V. Jiang et al.,Nature Photonics **5**, 158–161 (2011)
  * {{ :groups:mg:coating_book_chap_15_precision_fp_cavity.pdf |High-precision laser stabilization via optical cavities}}, M. Martin and J. Ye
  * {{ :groups:mg:private:steffensauer:guidelines_for_developing_optical_clocks_with10_18fractional_frequency_uncertainty.pdf |}}

    
==== Relevant effects influencing frequency stability ====
=== Noise calculation ===
          * {{ :groups:mg:physrevlett.93.250602.pdf |Thermal-Noise Limit in the Frequency Stabilization of Lasers with Rigid Cavities}}, K. Numata et al., PRL **93**, 250602 (2004)
          * {{ :groups:mg:josab-29-1-178.pdf |Thermal noise in optical cavities revisited}}, T. Kessler et al., J. Opt. Soc. Am. B Vol. **29**, No. 1 (2012)
      * **Reduction of thermal noise limit**
          * **Higher-order mode locking:**
            * {{ :groups:mg:project_ptb-cavity:1801.05026.pdf |Thermal noise limited higher-order mode locking of a reference cavity}}, X. Y. Zeng et al., arXiv:1801.05026v1 (2018)
=== Pound-Drever-Hall (PDH) ===
          * {{ :groups:mg:laser_phase_and_frequency_stabilization_using_an_optical_resonator.pdf |Laser Phase and Frequency Stabilization Using an Optical Resonator}}, R. W. P. Drever et al., Appl. Phys. B **31**, 97-105 (1983)
          * EOM-Temperature
=== Vibration ===
          * {{ :groups:mg:art_3a10.1007_2fs00340-013-5676-y.pdf |Simple vibration-insensitive cavity for laser stabilization at the 10^-16 level}}, J. Keller et al., Appl. Phys. **B 116**, 203–210 (2014) 
          * https://journals.aps.org/pra/abstract/10.1103/PhysRevA.79.053829
=== Residual amplitude modulation ===
          * {{ :groups:mg:ol-39-7-1980.pdf |Reduction of residual amplitude modulation to 1 × 10-6 for frequency modulation and laser stabilization}}, W. Zhang et al., Optics Letters Vol. **39**, No. 7 (2014)
          * {{ :groups:mg:05095849.pdf |Investigation and cancellation of residual amplitude modulation in fiber electro-optic modulator based frequency modulation gas sensing technique}}, Z. Li et al., Sensors and Actuators B **196**, 23–30 (2014)
          * {{ :groups:mg:josaa-31-1-81.pdf |Residual amplitude modulation in interferometric gravitational wave detector}}, K. Kokeyama et al., J. Opt. Soc. Am. A Vol. **31**, No. 1 (2014)
              * {{ :groups:mg:1309.4522.pdf |Residual Amplitude Modulation in Interferometric Gravitational Wave Detectors}}, K. Kokeyama et al.,  aXiv:1309.4522v1 [gr-qc] 18 Sep 2013
=== Temperature/CTE ===
    * **ULE compensations rings:** 
          * {{ :groups:mg:leg10.pdf |Tuning the thermal expansion properties of optical reference cavities with fused silica mirrors}}, T. Legero et al., J. Opt. Soc. Am. B Vol. **27**, No. 5 (2010) 




==== Spacer geometries / Cavity types ====
  * **Vertical geometry:**
          * **Length: 2.5 cm:**
             * {{ :groups:mg:project_ptb-cavity:ol-42-7-1277.pdf |Compact, thermal-noise-limited reference cavity
for ultra-low-noise microwave generation}}, J. Davila-Rodriguez et al., Opt. lett. Vol. 42, No. 7 (2017)
          * **Length: 7 cm:**
             * {{ :groups:mg:ol-32-6-641.pdf |Compact, thermal-noise-limited optical cavity for diode laser stabilization at 1×10−15}}, A. D. Ludlow et al., Optics Letters Vol. **32**, Issue 6, pp. 641-643 (2007) 
          * **Length: 10 cm:**
             * {{ :groups:mg:che14.pdf |A compact, robust, and transportable ultra-stable laser with a fractional frequency instability of 1 × 10−15}}, Q. F. Chen et al., REVIEW OF SCIENTIFIC INSTRUMENTS 85, 113107 (2014)
          * **Length: 48 cm:**
             * {{ :groups:mg:ol-40-9-2112.pdf |8  ×  10−17 fractional laser frequency instability with a long room-temperature cavity}}, S. Häfner et al., Optical Letters Vol. **40**, No. 9 (2015)
             * A strontium lattice clock with 3×10^−17 inaccuracy and its frequency: {{ :groups:mg:project_ptb-cavity:a_strontium_lattice_clock_with_310_-17_inaccuracy_and_its_frequency.pdf |}}

  * **Cubic geometry:**
          * {{ :groups:mg:ol-36-18-3572.pdf |Force-insensitive optical cavity}}, S. Webster et al., Optics Letters Vol. **36**, Issue 18, pp. 3572-3574 (2011)
                * PTB took the NPL-design and updated it for a better longterm stability (see Häfner PHD-thesis, Chapter 4.2)

  * **Cryogenic single-crystal optical cavities:**
        * **Length: 6 cm:**
        * **Length: 21 cm:**
          * {{ :groups:mg:ol-39-17-5102.pdf |Ultrastable laser with average fractional frequency drift rate below 5 × 10−19/s}}, C. Hagemann et al., Optics Letters Vol. **39**, No. 17 (2014)
          * {{ :groups:mg:nphoton.2012.217.pdf |A sub-40-mHz-linewidth laser based on a silicon single-crystal optical cavity}}, T. Kessler et al., Nature Photonics Vol. **6**, 687-692 (2012)
          * https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.263202
  *  **Mercury (Paris) cavity:** 
      *  {{ :groups:mg:physreva.79.053829.pdf |Ultrastable lasers based on vibration insensitive cavities}}, J. Millo et al., PR A **79**, 053829 (2009)
      * {{ :groups:mg:ol-37-17-3477.pdf |Laser locking to the Hg199 𝑆01−𝑃03 clock transition with 5.4×10−15/√𝜏 fractional frequency instability }}, J. J. McFerran et al., Optics Letters Vol. **37**, No. 17, 3477-3479 (2012)

  *  **Core (Achim Peters):** 
      * {{ :groups:mg:private:steffensauer:iqec-2011-i991-2.pdf |}}

==== Measurement/characterization techniques of ultra-stable lasers ====
          * {{ :groups:mg:project_ptb-cavity:1.4971852.pdf |Characterization of electrical noise limits in ultra-stable laser systems}}, J. Zhang et al., Review of Scientific Instruments 87, 123105 (2016)
          * {{ :groups:mg:project_ptb-cavity:ol-42-7-1217.pdf |Phase noise characterization of sub-hertz linewidth
lasers via digital cross correlation
}}, X. Xie et al., Vol. 42, Issue 7, pp. 1217-1220 (2017)


==== Applications ====
  * **Transportable cavities:**
        * {{ :groups:mg:project_ptb-cavity:single_ion_transportable_optical_atomic_clocks.pdf |Single-ion, transportable optical atomic clocks}}, Marion Delehaye & Clément Lacroûte, Journal of Modern Optics, 65:5-6, 622-639 (2018)
  * **Lorentz invariance for the electron:**
       * Achim Peters: CORE
  * **time:**
    * {{ :groups:mg:private:steffensauer:riehle.pdf |}}


==== Noise ====
  * [[https://arxiv.org/pdf/1809.10720.pdf#page11|power spectral density of Brownian noise]]
  * Noise to frequency stability: {{ :groups:mg:private:steffensauer:dawkins.pdf |}}

=== Material-Konstanten ===
  * [[https://arxiv.org/pdf/gr-qc/0504134.pdf|Mechanical Loss I]]
  * [[https://arxiv.org/pdf/1003.2893.pdf|Mechanical Loss II]]

==== Coating ====
  * **Crystaline coatings:**
          * {{ :groups:mg:nphoton.2013.174.pdf |Tenfold reduction of Brownian noise in high-reflectivity optical coatings}}, Garrett D. Cole et al., Nature Photonics **7**, 644–650 (2013)
            * {{ :groups:mg:private:steffensauer:col13_sup.pdf |Anhang von Cole 2013}}
          * {{ :groups:mg:project_ptb-cavity:oe-26-5-6114.pdf |Optical performance of large-area crystalline
coatings}}, M. Marchito et al., Opt. Exp. 6114, Vol. 26, No. 5 (2018)

==== Doppelbrechung in crystallinen Spiegelschichten ====
  * {{ :groups:mg:private:steffensauer:ada83.pdf |}}
  * {{ :groups:mg:private:steffensauer:bab92.pdf |}}
  * {{ :groups:mg:private:steffensauer:jew87.pdf |}}
  * Anhang des Cole 2013 Papers

==== RAM Optimierung ====
  * {{ :groups:mg:private:steffensauer:zha14.pdf |}}

==== Ab wann ist ein Spiegel ein Supermirror? ====
  * Supermirrors: R>99.9999% (https://www.rp-photonics.com/supermirrors.html)

==== Metamirror ====
  * [[https://arxiv.org/pdf/1810.01251.pdf#page11|Thermal noise of Etalon]]

==== Transfer-Stabilität ====
  * {{ :groups:mg:06468089.pdf |Providing 10−16 Short-Term Stability of a 1.5-μm Laser to Optical Clocks}}, C. Hagemann et. al., IEEE Transactions on instrumentation and measurement, VOL. 62, NO. 6 (2013)
  * https://arxiv.org/pdf/1902.07012.pdf Transfer-stability von Mehlstäubler zu Siliizum (über zwei Gebäude mit Ethernet-Kabel) 

==== Kamm-Kamm-Vergleich/Frequenzkamm-Limitierung ====
  * https://arxiv.org/pdf/1910.04261.pdf

==== Finesse Messung ====
  * Ringdown von Cole: {{ :groups:mg:private:steffensauer:supermirror-high-performance-near-and-mid-infrared-crystalline-coatings.pdf |}}

==== Frequenzverdopplung ====
  * S. Herbers: {{ :groups:mg:private:steffensauer:oe-27-16-23262.pdf |}}

==== Darkmatter ====
    * Allgemein {{ :groups:mg:private:steffensauer:derevianko_2016_j._phys._conf._ser._723_012043_1_.pdf |}}
    * Cavities {{ :groups:mg:private:steffensauer:1808.00540.pdf |}}
    * clocks and cavities {{ :groups:mg:private:steffensauer:eaau4869.full_1_.pdf |}}
    * Fiber links {{ :groups:mg:private:steffensauer:srep11469.pdf |}}
    * GPS {{ :groups:mg:private:steffensauer:s41467-017-01440-4.pdf |}}