| 发明名称 | Characterizing laser output in a HAMR device | ||
| 摘要 | At least one laser input current is applied to a laser in a heat assisted magnetic recording device. Laser output power of the laser is measured at the at least one applied laser current. A relationship is characterized amongst temperature, applied laser input current and laser output power. Laser current is set to an optimal laser current as determined at manufacturing. A metric of recording performance is measured to determine if the relationship is acceptable. | ||
| 申请公布号 | US9153272(B1) | 申请公布日期 | 2015.10.06 |
| 申请号 | US201414278386 | 申请日期 | 2014.05.15 |
| 申请人 | Seagate Technology LLC | 发明人 | Rausch Tim;Trantham Jon D.;Dykes John W.;Yang Won Choul |
| 分类号 | G11B11/00;G11B7/1267;G11B5/012;G11B7/1263;G11B5/00 | 主分类号 | G11B11/00 |
| 代理机构 | Westman, Champlin & Koehler, P.A. | 代理人 | Farrell Leanne Taveggia;Westman, Champlin & Koehler, P.A. |
| 主权项 | 1. A method comprising: applying at least one laser input current to a laser in a heat assisted magnetic recording device; measuring laser output power of the laser at the at least one applied laser current; characterizing a relationship amongst temperature, the applied laser input current and the laser output power; setting the laser input current to an optimal laser current as determined at manufacturing; and measuring a metric of recording performance to determine if the relationship is acceptable. | ||
| 地址 | Cupertino CA US | ||