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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

Locking to a Reference Resonator - TOPTICA Solution

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/error-signal-generation/locking-to-a-reference-resonator#c15597

TOPTICA Solution With the PDH/DLC pro, TOPTICA offers a module for the electronic generation of a PDH signal. This includes an RF signal e.g. for driving the EOM. The PD signal recording the

PID Feedback Controllers

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/pid-feedback-controllers#c15615

Most controllers are a combination of these three elements. However, there are several ways how to combine and physically implement these elements. Consequently, there is a large variety of

PID Feedback Controllers

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/pid-feedback-controllers#c15617

The DLC pro lock is a digital lock based on a field-programmable gate array (FPGA) and reaches bandwidths of up to 30 kHz. It excels in terms of convenience and ease of use as it provides remote

Actuators for Laser Phase and Frequency Control

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/actuators-for-laser-phase-and-frequency-control#c15685

The last element of every feedback loop for phase and frequency locking is the actuator. It performs phase and frequency adjustments based on the control signal. While external components like

Actuators for Laser Phase and Frequency Control

URL: /application-notes/phase-and-frequency-locking-of-diode-lasers/actuators-for-laser-phase-and-frequency-control#c15687

Changing the temperature of the diode will change the laser frequency by a large amount, typical tuning coefficients are changes of 0.1 nm/K. However, as it typically takes quite a while for the