Efficient, Ultrastable 1Watt Laser using Ytterbium Fiber Amplifier

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$568,264.00
Award Year:
2001
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
54914
Agency Tracking Number:
992248
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2400 Charleston Rd, Mountain View, CA, 94043
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr.Kane
Engineering Program Manager
() -
tkane@lwecorp.com
Business Contact:
JeffreyKmetec
Manager, Advanced Product Grou
(650) 526-1248
rmortensen@lwecorp.com
Research Institute:
n/a
Abstract
A space-qualifiable laser with extraordinary frequency stability, small size, and high efficiency is required for proposed metrology systems. Nonplanar ring oscillators (NPROs) are the baseline technology for these systems. NPROs can reach the 1-Watt power required for proposed systems. However, we believe that a system built around a single, high-power NPRO is not the best design. An approach which will have lower linewidth, and lower power consumption, is a low-power NPRO amplified to a power of 1-Watt and greater by an Ytterbium-doped fiber amplifier (YDFA.) The advantages of an oscillator / amplifier configuration, compared to the conceptually simpler high-power oscillator, are that the frequency stability of lower-power oscillators is better than that of higher-power oscillators, and that Ytterbium fiber amplifiers are about twice as efficient as Neodymium oscillators, primarily because they do not require active cooling of pump diodes. An amplified system would have the good linewidth of the low-power NPRO, but with the low power consumption of the Ytterbium fiber amplifier. The goal of the proposed research program would be to experimentally demonstrate a laser source with the power, frequency stability and efficiency needed for use in a space-borne interferometer.

* information listed above is at the time of submission.

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