Stephen C Wolgast

US Patent:

47962704, Jan 3, 1989

Filed:

Apr 17, 1987

Appl. No.:

7/040542

Inventors:

Stephen C. Wolgast - Fremont CA

Assignee:

Spectra-Physics, Inc. - San Jose CA

International Classification:

H01S 320

US Classification:

372 54

Abstract:

A dye laser is of compact, rigid and simple construction, with a folded resonator cavity contained on a single rigid block of material, such as aluminum. The block has two or three mirror mount locations, at least one of which is a machined surface which receives a mirror directly and rigidly, without provision for adjustment. The other mirror mount location(s) has an adjustable mirror mount, and this may be the mirror mount for the output mirror. A dye jet mounting block has a flat surface which engages against a flat surface on the exterior of the laser block, with fasteners allowing for rotation and translation of the dye jet block on the laser resonator block to provide for both rotational and translational tuning adjustment of the dye jet with respect to the resonator cavity and a pumping beam. The pumping beam preferably is folded by an adjustable pump mirror on its approach to the dye jet. A mirror adjustment for the output mirror may include a spherical adjustment device, wherein a circular mounting plate of the mirror engages in a spherical depression formed in an outside surface of the laser block, so that sliding movements of the mirror in the spherical depression will effect desired angular adjustments of the mirror.

US Patent:

48978477, Jan 30, 1990

Filed:

Sep 30, 1987

Appl. No.:

7/103009

Inventors:

Stephen Wolgast - Fremont CA

Assignee:

Spectra Physics, Inc. - San Jose CA

International Classification:

H01S 320

US Classification:

372 54

Abstract:

There is disclosed an apparatus for translating the focal points of curved mirrors in a dye laser along a straight line comprising an experimentally selected pivot point for each mirror and a means for causing each mirror to pivot about its pivot point. Rotation of the mirror about the pivot point causes the incoming beam to strike the mirror in a different place on the curved surface such that the angle of reflection changes in such a manner as to compensate for the arcuate movement of the mirror around the pivot point. Also disclosed are hinge designs to allow a mirror to pivot about an apparent pivot point which is much farther away from the mirror than the hinge. Also disclosed are methods for attaching the mirror supports to the laser frame in dye laser construction and for tuning the dye laser so constructed for optimum lasing efficiency.

US Patent:

49225014, May 1, 1990

Filed:

Sep 30, 1987

Appl. No.:

7/103074

Inventors:

Stephen Wolgast - Fremont CA

Assignee:

Spectra Physics, Inc. - San Jose CA

International Classification:

H01S 320

US Classification:

372 54

Abstract:

There is disclosed an apparatus for translating the focal points of curved mirrors in a dye laser along a straight line comprising an experimentally selected pivot point for each mirror and a means for causing each mirror to pivot about its pivot point. Rotation of the mirror about the pivot point causes the incoming beam to strike the mirror in a different place on the curved surface such that the angle of reflection changes in such a manner as to compensate for the arcuate movement of the mirror around the pivot point. Also disclosed are hinge designs to allow a mirror to pivot about an apparent pivot point which is much farther away from the mirror than the hinge. Also disclosed are a method for attaching the mirror supports to the laser frame in dye laser construction and a method for tuning the dye laser so constructed for optimum lasing efficiency.

US Patent:

20170322568, Nov 9, 2017

Filed:

Dec 8, 2016

Appl. No.:

15/372730

Inventors:

- Santa Clara CA, US
VIJAYAKUMAR VENUGOPAL - Berkeley CA, US
NILADRI ROY - Bangalore, IN
RAMACHANDRA MURTHY GUNTURI - Bangalore, IN
ANDREAS NEUBER - Stuttgart, DE
STEPHEN C. WOLGAST - Cupertino CA, US

International Classification:

G05D 7/06
H01L 21/67

Abstract:

Embodiments of a system, a gas panel and method thereof having reduced exhaust requirements for the delivery of gases include distributing an inert gas in at least one interior portion of the gas panel in which a gas to be delivered by the gas panel is present. Embodiments can further include monitoring for leaks in the interior portion of the gas panel and, in response to a detected leak, increasing the distribution of the inert gas in at least the portion of the gas panel in which the leak was detected. Embodiments may further include exhausting gases out of the gas panel. In such embodiments, in response to a detected leak, a rate of the exhausting of the gases is increased. The gas panel can also be sealed to reduce an amount of gas that leaks out of or air that enters into the gas panel.