Loading...
Please wait, while we are loading the content...
Similar Documents
Diode pumped nd:yag laser development
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Herzog, D. G. Reno, C. W. |
| Copyright Year | 1976 |
| Description | A low power Nd:YAG laser was constructed which employs GaAs injection lasers as a pump source. Power outputs of 125 mW TEM CW with the rod at 250 K and the pump at 180 K were achieved for 45 W input power to the pump source. Operation of the laser, with array and laser at a common heat sink temperature of 250 K, was inhibited by difficulties in constructing long-life GaAs LOC laser arrays. Tests verified pumping with output power of 20 to 30 mW with rod and pump at 250 K. Although life tests with single LOC GaAs diodes were somewhat encouraging (with single diodes operating as long as 9000 hours without degradation), failures of single diodes in arrays continue to occur, and 50 percent power is lost in a few hundred hours at 1 percent duty factor. Because of the large recent advances in the state of the art of CW room temperature AlGaAs diodes, their demonstrated lifetimes of greater than 5,000 hours, and their inherent advantages for this task, it is recommended that these sources be used for further CW YAG injection laser pumping work. |
| File Size | 11135334 |
| Page Count | 100 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770015520 |
| Archival Resource Key | ark:/13960/t0004xg36 |
| Language | English |
| Publisher Date | 1976-05-01 |
| Access Restriction | Open |
| Subject Keyword | Lasers And Masers Neodymium Epitaxy Avalanche Diodes Injection Lasers Gallium Arsenide Lasers Yag Lasers Aluminum Compounds Absorption Spectra Heat Sinks Continuous Wave Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
