Ultra-stable local oscillator (H-Beast)

Labbook

ToDo

List of ideas/open questions

Wishlist

List of orders and status

Paper

List of collaboration partner and companys

Setup

Resonator

Mirrors/Contamination

Substrates

Finesse measurement

Finesse measurement outside vacuum

Finesse measurement without spacer

Finesse measurement with spacer

Birefringence measurement with spacer

Finesse measurement inside vacuum

ULE-compensations-rings

Spacer

Optical Mask

Optical Contacting

Calculations

Calculation of Finesse outside vacuum

Calculation of reflectiondip / Impedance of the cavity

Calculation between cavity spectrum and frequency distance

Calculation of EOM frequency

Calcualtion of linewidth

Mounting

Mounting

Cleaning of the mounting

Vacuum

Vacuum tests

Vaccum tests

Bake out

Bake out tips

Bake out List

Bake out protocol

Vacuum Components

Vacuum chamber

CF-components: Pump, Sensor, Valves, etc.

Attaching of the vacuum feedthroughs

Seal material and vacuum suitable glue

Anpressring für die Fenster

Heat shield´s

Components: Heat shield and vacuum suitable screws

Electrolytic polishing

Mass spectrometry

Determination of transport screws for the resonator

Attaching of the windows on the heat shields

Vacuum optics

Optical components inside the vacuum: Windows and isolator

Attaching of the windows on the vaccum chamber

Optics

Incoupling breadboard

Incoupling breadboard

Components

Mode Matching

Outcoupling breadboard

Outcoupling breadboard

Electronics

Electronics inside the vacuum

Components for the electronics inside the vacuum and accessories

Instructions for attaching the electronic and labelling of the NTC´s

Characterization of the NTC´s

Electronics outside the vacuum

PTB electronic assignment

Components for the electronics outside the vacuum

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

Todo List

Wavelength: 1560.47 nm

ITU channel number 21, 192.10 THz, 1560.61 nm

Laserdiode

Laserdiode Mount

Laser driver

Pin assignment/Cables

Temperature Controller

Laser Housing

Fiber setup

Fiber-components

Fiber-Photodiode (IQ Version)

EOM and AOM Box

Electronic-Components

Fiber-connections

Vibration isolation

Performance / Measurements

Thermal noise limit

Pound-Drever-Hall (PDH)

Residuelle Amplitudenmodulation (RAM)

Future Setup @ IQ

Transfer of stability:

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)