DEVELOPMENT OF A MODE-LOCKED TI:SAPPHIRE LASER

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,471.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
10127
Agency Tracking Number:
10127
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
45 Winthrop St, Concord, MA, 01742
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr David Welford
(508) 371-2299
Business Contact:
() -
Research Institution:
n/a
Abstract
ADVANCES IN THE DEVELOPMENT OF TUNABLE SOLID-STATE LASER MATERIALS FOR THE NEAR-INFRARED PROVIDES US WITH THE OPPORTUNITY TO DEVELOP A CLASS OF HIGH PERFORMANCE LASER SYSTEMS THAT OVER-COME THE LIMITATIONS OF PRESENTLY AVAILABLE DYE LASERS. IN PARTICULAR, THE BROADLY TUNABLE TI:AL(2)O(3) SYSTEM IS ATTRACTIVE AS A NEAR-INFRARED DYE LASER SUBSTITUTE THAT OPERATES FROM 680 NM TO 1000 NM WHEN AR(+)-ION LASER PUMPED. THE SUBJECT OF THIS PROPOSAL IS THE DEVELOPMENT OF A NOVEL MODE-LOCKING TECHNIQUE FOR THE TI:AL(2)O(3) LASER THAT WILL PROVIDE A SOURCE OF PICOSECOND/SUBPICOSECOND DURATION PULSES OVER THE ENTIRE LASER TUNING RANGE OF 680 NM TO 1000 NM. WE PROPOSE INTRODUCING A NONLINEAR REFLECTOR INTO A LOSS MODULATED CW MODELOCKED LASER. AN ANALOGY MAY BE DRAWN BETWEEN THE USE OF A SATURABLE OBSORBER IN HYBRID-MODELOCKING OF DYE LASERS AND THE USE OF THE NONLINEAR REFLECTOR FOR THE TIAL(2)O(3) LASER. THE SATURABLE ABSORBER IS A NONLINEAR ELEMENT WITH INCREASING TRANSMISSION AS A FUNCTION OF INCREASING INCIDENT INTENSITY. OUR NONLINEAR REFLECTOR IS A GERMANIUM OPTICAL FLAT WITH INCREASING REFLECTIVITY AS A FUNCTION OF INCREASING INCIDENT INTENSITY. BOTH NONLINEAR DEVICES ARE CAPABLE OF PROVIDING PULSE COMPRESSION IN A SUITABLE RESONATOR CONFIGURATION WITH A GAIN MEDIUM. THE NONLINEAR REFLECTOR THAT SHOULD PROVIDE US WITH A BROAD-BANDWIDTH INTRACAVITY PULSE COMPRESSION ELEMENT WITH SUPERIOR DURABILITY. SUCCESSFUL OPERATION WOULD PROVIDE THE PROOF OF CONCEPT NECESSARY FOR FURTHER DEVELOPMENT OF A SCIENTIFIC INSTRUMENT.

* information listed above is at the time of submission.

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