Coherent light generators – Particular beam control device – Control of pulse characteristics
Patent
1990-05-30
1991-10-29
Gonzalez, Frank
Coherent light generators
Particular beam control device
Control of pulse characteristics
372 38, 372 82, 307106, H01S 3103
Patent
active
050621130
ABSTRACT:
A repetitive voltage signal, such as a sinusoidal wave, is supplied to the anode of a step-recovery diode through an inductor. A variable voltage source is connected to the cathode of the step-recovery diode. Conduction of the step-recovery diode and cut-off of the reverse current flowing through it are repeated with a period identical to the period of the repetitive voltage signal. On account of the abrupt reverse current cut-off characteristic of the step-recovery diode, a voltage is induced in the inductor when the reverse current is cut off, thereby producing an abrupt voltage change at the junction point between the inductor and the step-recovery diode. This abrupt voltage change is converted by differentiation into a short pulse to drive a semiconductor laser diode.
REFERENCES:
patent: 3614447 (1971-10-01), Paoll et al.
patent: 4928248 (1990-05-01), Takahashi et al.
Hewlett Packard Application Note 918, "Pulse and Waveform Generation with Recovery Diodes", Oct. 1984.
"Simple Picosecond Pulse Generation Scheme for Injected Lasers", Electronics Letters, vol. 16, No. 15, Jul. 17, 1980.
Gonzalez Frank
Hamamatsu Photonics K.K.
Morse Susan S.
LandOfFree
Light source drive device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light source drive device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light source drive device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1404414