Fig. 4: High-density integrated lasers and broad wavelength-tunable single-mode lasers at high temperature based on CQDAMs.
From: Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K
a Schematic diagram of the mass-produced integrated CQD microlasers working at high temperature. b Real-color image of the different CQD-based silica matrix samples excited by ultraviolet light. c The corresponding internal enlarged microscopic image under high-excitation condition. The red dots are the lasing CQDAMs at 400 K. d Multicolor single-mode lasers coming from CQDAMs of different compositions and/or sizes, the lasing energies of which cover the entire visible range
