The name of W. Kok is already known to the reader from his book "Sound and Light Waves." In his new book, Lasers and Holography, W. Kok clearly and simply talks about the basic concepts and problems of coherent optics. The diffraction, coherence and surprising properties of holograms in Kok's presentation will become clear even to an unprepared reader. The book will be especially interested in junior students and high school students.