div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page1jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails1jpg width=140 height=200 adivpPublished in Applied Optics 27 issue 22 4739-4746 1988which should be used for any reference to this workp p1pdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page2jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails2jpg width=140 height=200 adivp2pdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page3jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails3jpg width=140 height=200 adivp3pdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page4jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails4jpg width=140 height=200 adivp4pdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page5jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails5jpg width=140 height=200 adivp5pdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5page6jpg target=_blank img data-url=published-in-applied-optics-27-issue-22-4739-4746-1988-htmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: Published in Applied Optics 27 issue 22 4739-4746 1988 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer202202062061e29315f9011b3a4426ed18html5thumbnails6jpg width=140 height=200 adivp6pdiv