1-2hit |
Minoru YAMADA Keiichi OMI Yasumasa NASHIDA Masao GAMO
A theoretical prediction that the lasing gain must increase by breaking the electrically neutral condition in the active layer is given. A possible structure to give a very low threshold current less than 1 mA was discussed.
Potential Controlled (POCO) Laser is a new type of laser which utilizes a character that the lasing gain effectively increases and the threshold current level can be reduced by putting a large number of holes into the active layer. The basic idea of this laser is very close with the so called modulation doping in the multi-quantum-well structure. In this paper, the optimum configuration of the POCO laser is theoretically examined in detail. Possibility to get a very low threshold current lower than 100µA is predicted.