Phase stabilization for mode locked lasers

Patent · Tue Aug 04 00:00:00 EDT 1987

OSTI ID:6383894

Baer, M T

A method is described for stabilizing a phase relationship between two mode locked lasers, comprising: driving through a power splitter the mode lockers of both lasers from a single stable radio frequency source; monitoring the phase of pulses from each laser utilizing a fast photodiode output of each laser; feeding the output of the fast photodiodes to a phase detector and comparator; measuring a relative phase difference between the lasers with a phase detector and comparator, producing a voltage output signal or phase error signal representing the phase difference; amplifying and filtering the voltage output signal with an amplifier and loop filter; feeding the resulting output signal to a voltage controlled phase delay between the power splitter and one of the lasers; and delaying the RF drive to the one laser to achieve a desired phase relationship, between the two lasers.

• Assignee: Spectra-Physics, Inc., San Jose, CA
• Patent Number(s): US 4685111
• OSTI ID: 6383894
• Resource Relation: Patent File Date: Filed date 1 May 1985
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
LASERS
MODE LOCKING
PHASE STABILITY
PHOTODIODES
AMPLIFIERS
COMPARATOR CIRCUITS
DIGITAL FILTERS
ELECTRIC POTENTIAL
MONITORING
PULSES
RF SYSTEMS
SIGNALS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
STABILITY
420300* - Engineering- Lasers- (-1989)