DR. CHRISTIAN F. RISSER, M.D.
Medical Practice at 3 St, Phoenix, AZ

5754575, May 19, 1998

Apr 23, 1997

8/842156

Yefim P. Sukhman - Scottsdale AZ
Mikhail E. Ryskin - Phoenix AZ
Christian Julian Risser - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01S 304

372 36

A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes. Air cooled heatsinks (161,162, 176,177) are held tightly against while being flexibly mounted to the laser tube assembly reducing mechanical and operational torsional distortion, misalignment and instability.

5894493, Apr 13, 1999

Apr 23, 1997

8/842003

Yefim P. Sukhman - Scottsdale AZ
Mikhail E. Ryskin - Phoenix AZ
Christian Julian Risser - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01S 3097

372 83

A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (A) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (B) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes. Air cooled heatsinks (161,162, 176,177) are held tightly against while being flexibly mounted to the laser tube assembly reducing mechanical and operational torsional distortion, misalignment and instability.

5901167, May 4, 1999

Apr 30, 1997

8/846552

Yefim P. Sukhman - Scottsdale AZ
Christian Julian Risser - Phoenix AZ
Mikhail E. Ryskin - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01S 322

372 58

A gas laser design (10) includes, an elongated sealed tube (21) filled with a gas, a power supply for exciting the gas, an optical resonator (24,25) for producing directional optical energy, and a fan/electronics package assembly (50), all of which are surrounded and enclosed by an external housing (30,70,90) forming a passageway in the space between the tube and the housing for providing cooling air therethrough. The passageway is divided into two physically separated cooling air paths by a horizontal surface (21a or 41). The lower space is a dual L-shaped path defining the first cooling air path downwardly at the inlet end of the tube in the vertical air channels (31,32) formed by the contoured shape of the tube and rearwardly (33) through the spaces (27,29) between the horizontal fins (26,28) of the tube to an outlet (101) at the rear of the tube. The upper space defines the second cooling air path from the inlet end of the tube horizontally rearwardly (64) around and over the electronics package (50) mounted in that portion of the passageway in a U-shaped finned heatsink channel (53), through the spaces (61,63) between the fins (62,64) to the atmosphere at the rear end. The zone (44) under the fan (52) is common to both cooling air paths.

5867517, Feb 2, 1999

Apr 30, 1997

8/846550

Yefim P. Sukhman - Scottsdale AZ
Christian Julian Risser - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01S 322, H01S 3223

372 58

A sealed gas laser tube (10) has a pair of electrically insulated electrodes (53, 54) supported in the tube (11) adapted to couple to an external RF supply (30). With respect to each electrode, an RF feed terminal (84) having an externally threaded stem (84a) supported in the tube cooperates, through a sealable common feed/fill port (43) in the housing (11), with a movable plunger (100) stem (102) having an internally threaded central recess (105) supported (90) by the electrode such that when the terminal and plunger are in first positions spaced apart from each other, the plunger stem is withdrawn from the feed/fill port which is open wider than in the prior art enabling faster evacuation and refilling, and, when the terminal and plunger are in second positions drawn together, the plunger stem is pulled into the feed/fill port sealingly contacting an inner portion (82a) of an o-ring (82), the outer portion (82c) of which is simultaneously compressed (83) by the RF feed terminal to sealingly contact a feed/fill port wall, thereby re-sealing the tube and enabling normal laser operations with the RF feeds supplying the RF excitation. An opening (93) in the electrode support through which the plunger is drawn is wide enough that the plunger is self centering due to the action of the o-ring (82) as it is drawn tight by the RF feed terminal to close the port whereby bending forces are eliminated from the electrodes.

5661746, Aug 26, 1997

Oct 17, 1995

8/543924

Yefim P. Sukhman - Scottsdale AZ
Mikhail E. Ryskin - Phoenix AZ
Christian Julian Risser - Phoenix AZ

Universal Laser Syatems, Inc. - Scottsdale AZ

H01S 3097

372 83

A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing Without disturbing the uniform distribution of forces on the electrodes. Air cooled heatsinks (161,162, 176,177) are held tightly against while being flexibly mounted to the laser tube assembly reducing mechanical and operational torsional distortion, misalignment and instability.

5982803, Nov 9, 1999

Apr 23, 1997

8/842157

Yefim P. Sukhman - Scottsdale AZ
Mikhail E. Ryskin - Phoenix AZ
Christian Julian Risser - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01S 3097

372 87

A pair of elongated, parallel electrodes (91,92) are insulatively mounted within a tubular housing (111) filled with a laser gas mixture between an arrangement of reflective optical elements (120,150) sealingly mounted at each end of the housing. The electrodes form a rectangular gas discharge area (40) the minimum spacing (a) between which is the diameter of the fundamental free-space mode of the stable, laser resonator (17) formed in the gap when the electrodes are rf excited (13). A multi-pass optical configuration (30,50) uses the full width (b) of the active medium to produce a high power, compact laser (10,200). Deformable support rings (97) are compressed to push the electrodes apart against small cylindrical spacers (99) abutting the inner walls of the housing to maintain the electrodes' spatial relationship. The rf feeds (103) sealingly (112) connected to the electrodes through the housing without disturbing the uniform distribution of forces on the electrodes. Air cooled heatsinks (161,162, 176,177) are held tightly against while being flexibly mounted to the laser tube assembly reducing mechanical and operational torsional distortion, misalignment and instability.

5881087, Mar 9, 1999

Apr 30, 1997

8/846551

Yefim P. Sukhman - Scottsdale AZ
Christian Julian Risser - Phoenix AZ
Mikhail E. Ryskin - Phoenix AZ

Universal Laser Systems, Inc. - Scottsdale AZ

H01J 303

372 61

An extruded aluminum gas laser tube assembly (10) has a pair of extruded, elongated, electrically insulated, aluminum electrodes (23,24) adapted to couple to an external RF supply and supported in the laser tube in predetermined spaced-apart relationship relative to each other and to the laser tube (11). The electrode supporting structure is eight pairs of matching, longitudinal, machined grooves (12,21), four pairs at each end of the tube (11) and electrodes (23,24) in each of which pairs is received a cylindrical, insulated, anodized aluminum spacer pin (22) which slidably supports the electrodes in the tube and allows longitudinal expansion of the electrodes relative to the tube substantially without bending.