Green laser sources optimized for highly efficient microdisplay‐based field‐sequential mobile projectors

Abstract

Abstract— A novel green laser source, based on a monolithic cavity microchip laser platform, has been developed. The laser is designed to be a part of a miniature and efficient RGB light source for microdisplay‐based mobile projector devices. The use of highly efficient, periodically poled MgO‐doped lithium niobate as the non‐linear frequency doubler allows for a significant increase in the overall efficiency of the green microchip laser. Specifically, a 50–150‐mW green output with a wall‐plug efficiency exceeding 10% in the temperature range of greater than 40°C has been demonstrated. A compact package for this laser source with a volume less than 0.33 cm3 is discussed and results of performance tests are presented.

Laser + LCOS projection‐technology revolution

“…The most obvious effect of using lasers will be in the size and efficiency of the projection engines. 25,26 Figure 5 shows the expected trend in lumens per watt for laser + LCOS. This trend is for a "full white" screen with no consideration given to dimming the lasers during dark scenes.…”

39.1: Distinguished Paper: Laser+LCOS Technology Revolution

“…The most obvious effect of using lasers will be in the size and efficiency of the projection engines [15][16]. Figure 3 shows the expected trend in lumens per watt for Laser+LCOS.…”