Mark E Hacker

US Patent:

6570900, May 27, 2003

Filed:

Jun 8, 2001

Appl. No.:

09/877500

Inventors:

Horace W. Furumoto - Wellesley MA
Harry L. Ceccon - Boston MA
George E. S. Cho - Hopkinton MA
Mark P. Hacker - Burlington MA

Assignee:

Cynosure, Inc. - Chelmsford MA

International Classification:

H01S 320

US Classification:

372 54, 372 51, 372 53, 372 34

Abstract:

In a dye laser system, a porous bed filter is loaded with dye prior to operation of the system. With repeated firings, the dye solution is filtered by the porous bed filter to remove by-products of the laser process. Solute concentration is monitored and dye and additives removed by the filter are replenished by a metering pump. Precise temperature control assures consistent filtering of dye by the filter for more consistent color and energy output. To control the metering pump, the differential output of a two-channel absorption detector is digitized. The digitized signal is loaded into a counter which drives the metering pump. The useful lifetime of the dye solution is enhanced by incorporating pH buffers in the solution.

US Patent:

56688245, Sep 16, 1997

Filed:

Dec 10, 1993

Appl. No.:

8/165331

Inventors:

Horace W. Furumoto - Wellesley MA
Harry L. Ceccon - Boston MA
George E. S. Cho - Hopkinton MA
Mark P. Hacker - Burlington MA

Assignee:

Cynosure, Inc. - Bedford MA

International Classification:

H01S 320

US Classification:

372 54

Abstract:

In a dye laser system, a porous bed filter is loaded with dye prior to operation of the system. With repeated firings, the dye solution is filtered by the porous bed filter to remove by-products of the laser process. Solute concentration is monitored and dye and additives removed by the filter are replenished by a metering pump. Precise temperature control assures consistent filtering of dye by the filter for more consistent color and energy output. To control the metering pump, the differential output of a two-channel absorption detector is digitized. The digitized signal is loaded into a counter which drives the metering pump. The useful lifetime of the dye solution is enhanced by incorporating pH buffers in the solution.

US Patent:

62467107, Jun 12, 2001

Filed:

Sep 15, 1997

Appl. No.:

8/929883

Inventors:

Horace W. Furumoto - Wellesley MA
Harry L. Ceccon - Boston MA
George E. S. Cho - Hopkinton MA
Mark P. Hacker - Burlington MA

Assignee:

Cynosure, Inc. - Chelmsford MA

International Classification:

H01S 322

US Classification:

372 54

Abstract:

In a dye laser system, a porous bed filter is loaded with dye prior to operation of the system. With repeated firings, the dye solution is filtered by the porous bed filter to remove by-products of the laser process. Solute concentration is monitored and dye and additives removed by the filter are replenished by a metering pump. Precise temperature control assures consistent filtering of dye by the filter for more consistent color and energy output. To control the metering pump, the differential output of a two-channel absorption detector is digitized. The digitized signal is loaded into a counter which drives the metering pump. The useful lifetime of the dye solution is enhanced by incorporating pH buffers in the solution.