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Frequency References - a) Atomic or Molecular Transitions – Spectroscopy

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/frequency-references#c15546

a) Atomic or Molecular Transitions – Spectroscopy For many applications, a good and simple way to stabilize a laser´s frequency is to compare it to an atomic or molecular transition. One advantage

Frequency References - b) Optical Cavities

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/frequency-references#c15547

b) Optical Cavities An alternative approach of measuring a laser´s frequency is to link it to the geometrical properties of an optical cavity. The most common type for this purpose is the

Frequency References - c) Frequency Comb

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/frequency-references#c15550

c) Frequency Comb Another way to stabilize a laser´s phase or frequency is to compare it to a stable light source. A tool which has been developed for exactly this purpose is the frequency comb. Its

Frequency References - TOPTICA Solution

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/frequency-references#c15552

TOPTICA Solution The TOPTICA DFC CORE + is a frequency comb which is based on Difference Frequency Generation (DFG), i.e. the carrier-envelop offset is passively fixed to \(f_{CEO}=0\). It is

Phase Lock to an Optical Reference

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/phase-lock-to-an-optical-reference#c15595

There are various ways to lock a laser to another optical reference. Here, the general principle of a phase lock to an optical reference will be described. The optical reference can e.g. be a second

Phase Lock to an Optical Reference

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/phase-lock-to-an-optical-reference#c15601

The PD signal is a function of the phase difference between the laser light and the optical reference under consideration. This signal is only constant if the frequency difference between the laser

Phase Lock to an Optical Reference - TOPTICA Solution

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/phase-lock-to-an-optical-reference#c15603

TOPTICA Solution TOPTICA offers a complete solution for locking a laser to a TOPTICA frequency comb. The DFC BC is an advanced beam combiner module. It offers the possibility to adjust the power

Phase Lock to an Optical Reference

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/phase-lock-to-an-optical-reference#c16011

An offset phase lock to a second cw laser can easily be implemented using TOPTICA´s FALC pro which will be presented in more detail in the application note “PID Feedback Controllers”. For

Locking to a Reference Resonator

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/locking-to-a-reference-resonator#c15818

The most straightforward way to generate an error signal is to send part of the laser light through the cavity and measure the transmission with a photodiode behind the cavity. Analogous to the

Locking to a Reference Resonator

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/locking-to-a-reference-resonator#c15590

The implementation of side-of-fringe locking using the cavity reflection is straightforward, but has the disadvantages described above. Instead, we will focus on a scheme known as the