WAVELENGTH STABILIZATION AND LINEWIDTH NARROWING FOR SINGLE MODE AND MULTIMODE LASER DIODES

摘要

System for wavelength stabilization in a multimode (MM) laser diode (LD), including at least one MM LD, a respective at least one MM 2×2 beam splitter for each MM LD, an isolator and at least one LD, the LD being respectively coupled with the isolator, the MM LD for generating high power MM laser light, the isolator for enabling laser light to pass through in only one direction and the LD for generating low power laser light, each respective MM 2×2 beam splitter including four ports, each respective MM 2×2 beam splitter having a highly asymmetric splitting ratio and for splitting the generated high power MM laser light and the generated low power laser light, each MM LD being respectively coupled with the fourth port of each respective MM 2×2 beam splitter and a wavelength of the high power laser light locking onto a wavelength of the low power laser light.

主权项

1. System for wavelength stabilization in a multimode (MM) laser diode (LD), comprising:
at least one MM LD, for generating high power MM laser light; a respective at least one MM 2×2 beam splitter, for each said at least one MM LD, each said respective at least one MM 2×2 beam splitter comprising four ports; an isolator, for enabling laser light to pass through in only one direction; and at least one LD, respectively coupled with said isolator, for generating low power laser light, wherein each said respective at least one MM 2×2 beam splitter is for splitting said generated high power MM laser light and said generated low power laser light, and has a highly asymmetric splitting ratio; wherein a first port and a third port, of each said respective at least one MM 2×2 beam splitter, each output a significantly high percent of said generated high power MM laser light and said generated low power laser light and a second port and a fourth port, of each said respective at least one MM 2×2 beam splitter, each output a significantly low percent of said generated high power MM laser light and said generated low power laser light; wherein each said at least one MM LD is respectively coupled with said fourth port of each said respective at least one MM 2×2 beam splitter; wherein a wavelength of said generated high power MM laser light locks onto a wavelength of said generated low power laser light, thereby wavelength stabilizing said at least one MM LD; and wherein said first port of each said respective at least one MM 2×2 beam splitter outputs said generated high power MM laser light as wavelength stabilized high power MM laser light.