USA flag logo/image

An Official Website of the United States Government

LASER-ACOUSTIC SYSTEM FOR VERTICAL PROFILING BURIED AND SURFACE ICE

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
10666
Program Year/Program:
1989 / SBIR
Agency Tracking Number:
10666
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Innovative Dynamics, Inc.
2560 North Triphammer Road Ithaca, NY 14850-
View profile »
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1989
Title: LASER-ACOUSTIC SYSTEM FOR VERTICAL PROFILING BURIED AND SURFACE ICE
Agency: NSF
Contract: N/A
Award Amount: $48,009.00
 

Abstract:

INNOVATIVE DYNAMICS PLANS TO INVESTIGATE SOLID-STATE LASERS TO BE INCORPORATED IN A LASER-ACOUSTIC SYSTEM FOR REMOTE SENSING APPLICATIONS IN THE ARCTIC ENVIRONMENT. THIS SYSTEMCONSISTS OF A PULSED LASER TRANSMITTER AND AN ACOUSTIC RECEIVER, BOTH OPERATED IN THE AIR. THE LASER BEAM IS FOCUSED TO A SMALL SPOT ON THE SURFACE OF THE GROUND. STRONG ABSORPTION OF THE LASER ENERGY AT THE SURFACE LIMITS PENETRATION OF THE BEAM TO A FEW WAVELENGTHS. INSTANT EVAPORATION OF SURFACE MOLECULES TAKES PLACE IF THE PEAK POWER DENSITY OF THE LASER SPOT ON THE SURFACE IS SUFFICIENTLY INTENSE. THE SUPERHEATED STEAM SUBSEQUENTLY EXPLODES, CREATING AN ACOUSTIC FIELD WHICH PROPAGATES THROUGH THE MEDIUM AND IS REFLECTED AT THE MEDIA INTERFACE. AN ACOUSTIC RECEIVER DETECTS THE REFLECTED SOUND FROM THE INTERFACE. PRECISE TIMING OF THESE SIGNALS MAKES IT POSSIBLE TO ACCURATELY MEASURE THE THICKNESS OF THE GIVEN MEDIUM. THE REFLECTIONS WOULD ALSO REVEAL CHARACTERISTICS OF THE MEDIUM. INITIAL ICE FIELD MEASUREMENTS PROVED THE FEASIBILITY OF THIS CONCEPT FOR MEASURING 1 METER THICK ICE USING A CO2 LASER OPERATING IN THE INFRARED PORTION OF THE SPECTRUM (10.6 UM). THE EMPHASIS OF THE PROPOSED PROGRAM ISTO DETERMINE THE FEASIBILITY OF USING A ND:YAG LASER OPERATING IN THE NEAR INFRARED REGION (1.06 UM) TO GENERATE ACOUSTIC PULSES IN VARIOUS MEDIA INCLUDING WATER, ICE, SNOW,AND SOIL. THE RESULTS OF THESE EXPERIMENTS WILL YIELD IMPORTANT INFORMATION AS TO THE POTENTIAL UTILITY OF AIRBORNE LASER REMOTE SENSING FOR RAPID AND WIDE SCALE MEASUREMENT OF SPATIAL AND TEMPORAL VARIATIONS IN SNOW, ICE,AND FROZEN CONDITIONS.

Principal Investigator:

Gail A Hickman
Principal Investigator
6072570534

Business Contact:

Small Business Information at Submission:

Innovative Dynamics
244 Langmuir Laboratory Ithaca, NY 14850

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No