USA flag logo/image

An Official Website of the United States Government

Femtosecond Temporal Pulse Shaping and Spectroscopy for Drilling and Inspecting…

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Spectral Energies, LLC
5100 Springfield Street Suite 301 Dayton, OH 45431-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: Femtosecond Temporal Pulse Shaping and Spectroscopy for Drilling and Inspecting Straight and Shaped Cooling Holes
Agency / Branch: DOD / USAF
Contract: FA8650-09-M-2971
Award Amount: $99,717.00


Laser micromachining is being widely used in every industry, including aerospace, automobile, microelectronics and bio-technology. The recent advent of commercial turn-key, high power femtosecond lasers has prompted a great amount of interest in using femtosecond lasers for machining. It has been demonstrated that the femtosecond laser has potential for achieving high precision owing to its extremely confined heat-affected zone. The objective of the proposed research is to develop a novel femtosecond laser micromachining technology based on temporally-shaped femtosecond pulses for DoD and other applications, including drilling shaped film-cooling holes in turbine blades. In these femtosecond pulses, the temporal shape and energy of each pulse, and the pulse-to-pulse separation time are all designed and adjusted at a time scale from femtosecond to nanosecond to overcome common problems associated with laser machining and maximize the machining speed. We will also implement diagnostic techniques to provide a feedback for process monitoring and laser parameter control. This will be based on laser-plasma emission for identifying materials and machining rates. In this project, we will focus on optimizing the pulse shapes for machining of film-cooling holes in turbine blades. However, the technique to be developed is generally applicable for machining a wide variety of other materials. BENEFIT: The proposed technology will have large impact on DoD applications such as drilling shaped film-cooling holes in turbine blades and other areas require high precision micro-machining. The proposed technology will also have commercial applications where laser diagnostics and associated hardware and software are extensivey used (e.g. academic and research institutions).

Principal Investigator:

Sivaram P. Gogineni

Business Contact:

Sivaram P. Gogineni
Technical Lead
Small Business Information at Submission:

2513 Pierce Ave. Ames, IA 50010

EIN/Tax ID: 020780873
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No