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A DIODE LASER FREQUENCY STANDARD USING VELOCITY MODULATION

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
21140
Program Year/Program:
1993 / SBIR
Agency Tracking Number:
21140
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Southwest Sciences, Inc.
1570 Pacheco Street Suite E-11 Santa Fe, NM 87505-3993
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1993
Title: A DIODE LASER FREQUENCY STANDARD USING VELOCITY MODULATION
Agency: DOE
Contract: N/A
Award Amount: $75,000.00
 

Abstract:

THIS PROJECT WILL DEVELOP A FREQUENCY STANDARD FOR THE URANIUM-STOMIC VAPOR LASER ISOTOPE SEPARATION (U-AVLIS) PROCESS USING A VISIBLE DIODE LASER LOCKED TO AN ATOMIC RESONANCE. A KEY FEATURE IS THE USE OF THE VELOCITY MODULATION METHOD TO PROVIDE A HIGH SIGNAL/NOISE LOCKING DISCRIMINANT WITHOUT THE NEED TO MODULATE THE LASER, AND WITH THE HIGH POWERS FOR SUB-DOPPLER EFFECTS. PHASE I WILL PRODUCE XENON IONS IN AN ALTERNATING CURRENT GLOW DISCHARGE TUBE OPERATED AT REDUCED PRESSURE TO PRODUCE A POSITIVE COLUMN REGION ABOUT ONE HALF METER LONG. THE ELECTRIC FIELD IS THIS PART OF THE DISCHARGE ACCELEATES THE IONS, CAUSING A SMALL DOPPLER MODULATION OF THEIR ABSORPTION FREQUENCIES. A PORTION OF THE DIODE LASER BEAM IS DIRECTED DOWN THE BORE OF THE DISCHARGE, THEN DETECTED WITH A PHOTODIODE. THE PHOTOCURRENT IS AMPLIFIEDAND DEMODULATED AT THE DISCHARGE FREQUENCY, PRODUCING A DERIVATIVE LINESHAPE THAT WILL BE USED TO LINE LOCK THE LASER BY ELECTRONIC FEEDBACK. THE EFFECTS OF PLASMA TEMPERATURE, PRESSURE, AND COMPOSITION ON THE DEMODULATED SIGNAL/NOISE RATIO AND CENTER FREQUENCY WILL BE EXAMINED.

Principal Investigator:

Dr David Christian Hovde
5059841322

Business Contact:

Small Business Information at Submission:

Southwest Sciences Inc.
1570 Pacheco St #e-11 Santa Fe, NM 87501

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