High speed switching power supply for a light controlled laser system

Patent · Tue Mar 12 00:00:00 EST 1985

OSTI ID:5376411

Mc Mahan, W H; Holtman, S H

A high speed switching power supply for a laser system is disclosed. In the preferred embodiment, proportional-plus-derivative feedback of the emitted light controls the duty cycle of the MOS-FET switching transistor to vary the d.c. voltage level applied across a storage capacitor from a d.c. power supply. The storage capacitor is connected across a laser tube to apply its stored voltage thereto. The MOS-FET transistor permits high speed switching. The derivative portion of the feedback damps out oscillatory tendencies in the feedback loop to permit increased loop bandwidth. The combination of the MOS-FET transistor and proportional-plus-derivative feedback permits the laser output to be controlled in a voltage-controlled mode.

• Assignee: American Laser Corporation
• Patent Number(s): US 4504951
• OSTI ID: 5376411
• Resource Relation: Patent File Date: Filed date 1 Jun 1982; Other Information: PAT-APPL-386600
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR LASERS
MODE CONTROL
POWER SUPPLIES
FEEDBACK
MOSFET
RADIATION DETECTORS
TRANSISTOR SWITCHING CIRCUITS
VISIBLE RADIATION
CONTROL
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FIELD EFFECT TRANSISTORS
LASERS
MEASURING INSTRUMENTS
MOS TRANSISTORS
RADIATIONS
SEMICONDUCTOR DEVICES
SWITCHING CIRCUITS
TRANSISTORS
420300* - Engineering- Lasers- (-1989)