====== USLO ====== {{ :groups:mg:img_5001.jpg?200|}} * [[:groups:Mg:Project PTB-Cavity:labbook|Labbook]] * [[:groups:Mg:Project PTB-Cavity:ToDo|ToDo]] * [[:groups:Mg:Project PTB-Cavity:OpenQuestions|List of ideas/open questions ]] * [[:groups:Mg:Project PTB-Cavity:Wishlist|Wishlist]] * [[:groups:Mg:Project PTB-Cavity:Orders|List of orders and status]] * [[:groups:Mg:Project PTB-Cavity:collaboration|List of collaboration partner and companys]] ===== Setup ===== ==== Resonator ==== * [[:groups:Mg:Project PTB-Cavity:Mirrors|Mirrors/Contamination]] * [[:groups:Mg:Project PTB-Cavity:Substrates|Substrates]] * **Finesse measurement** * **Finesse measurement outside vacuum** * [[:groups:Mg:Project PTB-Cavity:Finesse|Finesse measurement without spacer]] * [[:groups:Mg:Project PTB-Cavity:Finesse with spacer|Finesse measurement with spacer]] * [[:groups:Mg:Project PTB-Cavity:Doppelbrechung with spacer|Birefringence measurement with spacer]] * **Finesse measurement inside vacuum** * [[:groups:Mg:Project PTB-Cavity:ULE-compensations-rings|ULE-compensations-rings]] * [[:groups:Mg:Project PTB-Cavity:Spacer|Spacer]] * [[:groups:Mg:Project PTB-Cavity:Optical Mask|Optical Mask]] * [[:groups:Mg:Project PTB-Cavity:Optical Contacting|Optical Contacting]] * **Calculations** * [[:groups:Mg:Project PTB-Cavity:Finesse assessment for vacuum|Calculation of Finesse outside vacuum]] * [[:groups:Mg:Project PTB-Cavity:Reflectiondip respectively Impedance of the cavity|Calculation of reflectiondip / Impedance of the cavity]] * [[:groups:Mg:Project PTB-Cavity:Calculation between cavity spectrum and frequency distance|Calculation between cavity spectrum and frequency distance]] * [[:groups:Mg:Project PTB-Cavity:Calculation of EOM frequency|Calculation of EOM frequency]] * [[:groups:Mg:Project PTB-Cavity:Linewidth|Calcualtion of linewidth]] ==== Mounting ==== * [[:groups:Mg:Project PTB-Cavity:Mounting|Mounting]] * [[:groups:Mg:Project PTB-Cavity:Cleaning of the mounting|Cleaning of the mounting]] ==== Vacuum ==== * **Vacuum tests** * [[:groups:Mg:Project PTB-Cavity:Vacuum:First vaccum test|Vaccum tests]] * **Bake out** * [[:groups:Mg:Project PTB-Cavity:Vacuum:Bake out tips|Bake out tips]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Bake out|Bake out List]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Bake out protocol|Bake out protocol]] * **Vacuum Components** * [[:groups:Mg:Project PTB-Cavity:Vacuum:Chamber|Vacuum chamber]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Vacuum components|CF-components: Pump, Sensor, Valves, etc.]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Attaching of the vacuum feedthroughs|Attaching of the vacuum feedthroughs]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:seal material |Seal material and vacuum suitable glue]] * [[:groups:Mg:Project PTB-Cavity:Anpressring für die Fenster|Anpressring für die Fenster]] * **Heat shield´s** * [[:groups:Mg:Project PTB-Cavity:Vacuum:Heat shield| Components: Heat shield and vacuum suitable screws]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:electrolytic polishing|Electrolytic polishing]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Mass spectrometry|Mass spectrometry]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Determination of transport screws for the resonator|Determination of transport screws for the resonator]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Attaching of the windows on the vaccum chamber on the heat shields|Attaching of the windows on the heat shields]] * **Vacuum optics** * [[:groups:Mg:Project PTB-Cavity:Vacuum:Vacuum optics|Optical components inside the vacuum: Windows and isolator]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Attaching of the windows|Attaching of the windows on the vaccum chamber]] ==== Optics ==== * **Incoupling breadboard** * [[:groups:Mg:Project PTB-Cavity:Incoupling breadboard-Board|Incoupling breadboard]] * [[:groups:Mg:Project PTB-Cavity:Incoupling breadboard|Components]] * [[:groups:Mg:Project PTB-Cavity:Mode Matching|Mode Matching]] * **Outcoupling breadboard** * [[:groups:Mg:Project PTB-Cavity:Outcoupling breadboard-Board|Outcoupling breadboard]] ==== Electronics ==== * **Electronics inside the vacuum** * [[:groups:Mg:Project PTB-Cavity:Vacuum:Electronics inside the vacuum|Components for the electronics inside the vacuum and accessories]] * [[:groups:Mg:Project PTB-Cavity:Instructions for attaching the electronic|Instructions for attaching the electronic and labelling of the NTC´s]] * [[:groups:Mg:Project PTB-Cavity:Characterization of the NTC´s|Characterization of the NTC´s]] * **Electronics outside the vacuum** * [[:groups:Mg:Project PTB-Cavity:Vacuum:PTB Verkabelung|PTB electronic assignment]] * [[:groups:Mg:Project PTB-Cavity:Vacuum:Components outside vacuum|Components for the electronics outside the vacuum]] * [[:groups:Mg:Project PTB-Cavity:Labelling of the cables|Labelling of the cables]] ==== Laser at PTB ==== * Company: NKT Photonics * Fiber laser Koheras Basik Module * Product type: K122-102-665 * Wavelength: 1542.14 nm * Power setpoint: 40 mW * Power Range: 12-40 mW * Wavelength tuning: -499.9 ... +570 pm * Power stability 0.01 dB ==== Laser at IQ ==== {{ :groups:mg:img_5004.jpg?100|}} * [[.:laser_iqo_todo|Todo List]] * Wavelength: 1560.47 nm * ITU channel number 21, 192.10 THz, 1560.61 nm * [[.:Laserdiode|Laserdiode]] * [[.:Laserdiode Mount|Laserdiode Mount]] * [[.:Laser driver|Laser driver]] * [[.:Pin assignment|Pin assignment/Cables]] * [[.:Temperature Controller|Temperature Controller]] * [[.:Laser Housing|Laser Housing]] * [[.:Laserdiode Characterisation|Characterisation]] * [[.:SHG|SHG (1560nm -> 780nm)]] ==== Fiber setup ==== * [[:groups:Mg:Project PTB-Cavity:Fiber-Components|Fiber-components]] * [[.:Photodiode2|Fiber-Photodiode (IQ Version)]] * [[:groups:Mg:Project PTB-Cavity:EOM and AOM Box|EOM and AOM Box]] * [[:groups:Mg:Project PTB-Cavity:Electronic-Components|Electronic-Components]] * [[.:Fiber-connections|Fiber-connections]] ==== Vibration isolation ==== * **[[:groups:Mg:Project PTB-Cavity:Vibration isolation|Vibration isolation]]** ==== Monitoring ==== * [[:groups:Mg:Project PTB-Cavity:Temperature and vacuum pressure monitoring|Temperature and vacuum pressure monitoring]] ==== Performance / Measurements ==== * [[:groups:Mg:Project PTB-Cavity:Thermal noise limit|Thermal noise limit]] * [[:groups:Mg:Project PTB-Cavity:Pound-Drever-Hall|Pound-Drever-Hall (PDH)]] * [[:groups:Mg:Project PTB-Cavity:RAM|Residuelle Amplitudenmodulation (RAM)]] * [[:groups:Mg:Project PTB-Cavity:Vacuum pressure|Vacuum pressure]] ==== Future Setup @ IQ ==== * [[:groups:Mg:Project PTB-Cavity:Frequency doubling|Frequency doubling 1560 - 780 nm]] * **Transfer of stability:** * {{ :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) {{:groups:mg:locking_scheme_hannover-beast-mg.jpg?400|}}